I think the behaviour from some of Charli's fanbase is just an extreme version of the behaviour I have come to expect from a vocal subsection of gay men. The behaviour concentrates itself in relation to fandom of female popstars but can bleed into everyday interactions with actual women. Honestly, sometimes I only feel useful to these guys as long as I am providing some kind of entertainment - they aren't interested in or sometimes even inclined to see you as a human being and that is honestly why the behaviour is misogynistic.
Obviously with fandom, there is a lot of affection involved, but the line between laughing at or laughing with is teetered along very carefully. Probably the most obvious example of this is with Britney.
Charli's response honestly strikes me as someone mostly trying to not piss off a large section of her fanbase... a lot of gay men do not respond well AT ALL to accusations of misogyny as I have discovered a few times before on this very forum. It makes me feel that there is a queer subversion of the "
cool girl" stereotype - basically a woman who is willing to laugh along with sexist bullshit and give men a free pass.
To me, it explains some of the appeal of drag queens in the community as well - they have all the glamour and entertainment of a female star but generally with the sensibilities of a gay man.