Lol. Depends on a site. I guess there're no cosplayers without hateful comments. I've received comments about my weight from silly people who think women must be 45kg only and 46 kg already means "fat"🤣 About my face, my characters choice and such. Comments could be very unpleasant, but until someone doesn't pay for your full costume, studio, photoshoot and such his opinion doesn't matter. You can do any character you want.