>>63175091Serious answer:
Cosplaying is a woman-centric environment and women, especially /cgl/-adjacent groups, can be absolutely vicious because they treat cosplay suitability as a competition won by cultivating and sculpting your figure to an absurd degree. Shitting on casual cosplayers that just throw on an outfit and do some makeup is a passtime because the vindictive cruelty helps motivate those that inflict misery on themselves trying build their entire lifestyle around fitting their american size 12 ass into a japanese teenager's size 4 kumapantsu.
Hololive's fandom is male-dominated just by virtue of being a fandom about fawning over cute women. As a result, its reaction to cosplay is mostly motivated by libido. If it's hot, good. If it's not hot, move on--there's a hot one not far off.
And when you get enough horny guy together you'll quickly discover that there's a vocal group lusting after virtually every body type and configuration. Women used to dealing with other women are often unaccustomed to such unassumingly positive attention from guys--same reason a lot of vtubers are caught off guard by their fan's passion.
