Problem is, a woman in the real world is her own person.
A woman in the game world has been designed by someone else (whether it's a man or a woman).
The people who designed such a woman, often due to lazy writing, pandering to the audience, through their own narrow-minded view of the subject, or other factors I cannot think of at the moment, will paint the character in a non-inclusive light, as either 'eye candy', or if an npc, due to the entire team designating the person as 'fodder' (GTA prostitute, AC whore, Hitman Stripper) or even 'background gore' (prostitute corpse in an alley, AC 'checkpoint' prostitute murder victim, etc.).
It happens a hell of a lot more with female characters than it does with males. I'm not saying to stop it altogether, but scenario writers & designers need to stop being lazy and come up with more creative methods of showing their crapsack world or 'love to hate them' villains. It's very often 'kill the useless wench', etc. But I'm digressing from the joke thread so I'll stop the derailing and get back to SHULK SHORTS.
I know this is a joke argument in this thread, since this is a sarcastic thread about Shulk having boxer shorts as an outfit and all, but the argument that because he's drawn now with an optional shorts outfit, that it makes the entire industry either more sexist, or in another viewpoint, evens the score in any way.
One of the things I love about Xenoblade Chronicles (Shulk's game and the origin of the 'trunks' look) is that you can dress up all of the characters in the armors you buy. That is, the armor is dynamic and all of the armor you buy 'can' fit the weight class of the character that can wear it. There are also augments that allow you to wear heavier armor than normal.
Thus, you can have a character like Shulk wear things like "Magical Cream" (The trunks - essentially they handwave it as the 'armor' being a lotion you apply on the character), which, while hilariously revealing, also have magical properties. The same outfit (though not the same style) can be worn by the female characters. So, while it's still fan-service, it's all-inclusive fan service.
There are many fans of Swimsuit-wearing Shulk, and Swimsuit-wearing Dunban:


And, of course, there are many fans of the female characters while wearing the Swimsuit outfits:


As you can see, in this game, you can cover the characters as little or as much as you want. Also, every outfit has interchangeable parts (armor, leggings, gauntlets, helm). Entire combinations match aesthetically well, but sometimes you may increase a stat better if you switch up one for the other. There are also more conservative pieces of armor for Sharla than the ones I just showed, I just grabbed something from the Web to show some variety.
I'm a straight man, but Swimsuit Dunban is one handsome dude.