all the resources doesn't mean they would get the right VAs for the english version. there's factors outside of money that determine VA quality overall.
like the probability one VA gets picked over another, casting quality, how well the employer gets along with the VAs, and so on.
You're comparing something released in 1998 to 2018 and saying they sounded dumb. If that is your opinion then so be it. At least they sounded iconic and Dracula's voice actor was decent. This was in a context when most games didn't have proper voice acting, it's like chalk and cheese.
the videogame generation doesn't matter. remember PS1 era had some high quality VA during the same console era, like Metal Gear Solid, which has better VAs that VAs found in a lot of PS2 and PS3 games.
just as there are hammy performances now like back then, VA quality varies from game to game.
overall, top quality/ideal VAs or not, Bloodstained isn't gonna win any awards with storytelling (just like COTM's story is largely overlooked, especially being a spinoff compared to ROTN). even if there are clever plot twists and interesting alternate endings, its still gonna align with one of the usual tropes.
there are more legendary stories and memorable character interactions and mindblowing quotes in games, that dont even have VAs at all.