I'm wary of this argument from sarcasm because I've seen it used to marginalize people who do want other options.
I've seen it countless times, for example in the Warhammer community (in case you aren't familiar, Warhammer is a tabletop game where you wage war with toy soldiers; there are also countless videogame spinoffs). A major point of contention is that Space Marines, the poster boys of the Warhammer 40K universe, can only be men. Why? Because current fans say so. To be clear: Space Marines are genetically engineered, cyberenhanced, drug-addled monstrosities -- any resemblance to actual humans is long gone. So fans (usually male) argue that women cannot be supersoldiers because women are weaker (ignoring countries who do employ women in frontline combat roles), even though Space Marines are engineered monsters wearing powered armor.
This is the stuff of endless flamewars. But riddle me this: a common argument these very vocal male fans deploy is "of course, players are so fragile they can only play with toy soldiers that resemble them, that's why women supposedly need female Space Marines!". But they are the ones threatening to rage quit the game if Games Workshop (the IP owner) ever changes the background lore of the game to allow female Space Marines. Women never threaten to quit because Space Marines are currently a male only club.
It's not like female Space Marines or disabled Barbie are going to prevent anyone from buying the previous versions of the toy. They just introduce more options where there were fewer.