medieval gender politics probably factor in somewhere
also if it doesn't matter whether or not a child is male or female, then why does it need to be blown into an argument of sexism
it's entirely possible the belmonts just naturally draw the genetic lottery and produce predomnantly male heirs, in fact i'd be willing to bank on it considering it's a fifty-fifty chance of either gender in a new belmont child
and we get plenty of female belmonts--in OOE, that is
it's just then a question of whether or not said female belmonts can go on whipping adventures for various reasons, and the wygol belmonts didn't have this luxury (or rather curse, curse seems more appropriate a word choice) due to the VK being on hiatus for maintenance and bugfixing and albus trying to preserve the bloodline and keep them all safe and together
so this then become a case of the following:
-we have many canon female belmonts
-we have many that are prominent enough in OOE's plot that, while little more than sidequest stations, are worth consideration
-we have a magic alchemy god whip that can somehow sense minute genetic information as to whether someone's a pureblood and proper belmont
-we have a major belmont who got fucked up and tainted the whip and bloodline in the process
-we have a whip that's now tainted and in need of sealing and an unsealing test-of-worthiness ritual thing to actually use the thing proper
-we have a bloodline in some measure of peril thanks to richter's fuckup that eventually requires survivors to be rounded up and kept safe
so all things considered, i don't see how a family with a special magic blood and genetic configuration or something predominantly producing male heirs prior to the bloodline/weapon being tainted by shaft (giggity) is automatically an exercise in sexism
in-universe, there're enough details for it to line up reasonably well and make enough sense to not have to worry too hard over it--magic clan bloodline, magic whip that senses bloodline purity/specifics, bloodline as a result seems to produce entirely male heirs able to use the whip
hell i could probably even make a case wherein since leon was a male belmont when the whip was first made and inexorably linked to the clan bloodline, a sort of magic recessive gene came into being which ensured a similar male belmont to be born as the next generation so the whip could continue being used normally
i mean, we've got dominant and recessive genetic configurations and conditions that pass to gender-specific offspring all the time and those aren't a problem--are we suddenly gonna call genetics and DNA sexist because mothers can only pass colorblindness to their sons and not daughters?
but that's another case entirely and i'd likely need a whole thread to formulate it in detail
the simple fact is--in-universe, enough sense is made to not be an issue
if there's any measure of sexism to be found over this, then point the finger at social gender politics of the 80s--big hulking he-men in action flicks killing monsters and enemies with the power of muscle and mankini armor
we had arnie and stallone and ventura and sonny and all the other big B-flick action hero badasses which largely influenced CV's early designs (that earlier belmonts looked straight-up like characters out of conan is proof enough of this)
if anything's to blame for a lack of female belmont leads in the series, i'd place bets on the social norms of the time rather than any specific developers
and as an aside, why does it HAVE to be a belmont? we have strong female leads and co-leads in the franchise all over the place (canon or not)--sonia was a beast despite her retconning, shanoa's a badass, maria was pretty fucking involved in SOTN's plot arc despite being a teenager (not to mention helping kill a demon king with cute animals and not stereotypical he-man toughguy action when she was twelve, we have the various women in CV64 (again, despite retconning), we have charlotte who again helped co-destroy a demon king as a teenager, we have the lecarde sisters who posed major antagonistic threat as villains and then were directly responsible for unlocking the VK's latent power, we have yoko doing snoopy political church shit in aria and acting as both weaponsmith and major player in dawn, etc. etc. etc.
i really could go on
complaining that the lack of (canon) female belmonts as some sort of sexist smear on the franchise is silly, because there are a TON of strong female leads and co-leads and characters in the series
the only "deciding" factor is that they're not belmonts, which to me seems a bit ridiculous as the prerequisite factor
so they're all awesome and strong characters, but because they're not belmonts it doesn't matter and the series is sexist? i just can't wrap my head around this logic, i'm sorry--i'm really trying to, though
at this point trying to force a female belmont in with the same lead character strength as, say, shanoa would be an exercise in futility and probably just a bad idea
have a character who is strong first, female second, and belmont last--a strong character outweighs their gender, and their gender should only have relevance accordingly and not just because someone thinks there's a lack of this or that gender, and lastly their surname/clan/familial importance should come last because it's ultimately a minor contrivance of a detail
when the priorities shift so that character gender and role are given more importance than the actual strength and personalization of the character within the narrative...
...well, we get the fucking ghostbusters remake, where quality characters and writing play second fiddle to "hey look everyone! we have a main female lead and cast! look at how progressive we are!"
and we really don't need any more of that mentality in the arts, IMO