That user is on my blocklist so I haven’t seen their comment and I was asking you anyway.

incorrect stereotype

I’d argue it’s not, in fact, incorrect. Sure you can say it is but that doesn’t really prove anything. Stereotypes stem from reality.

if you swapped either or both of the characters in the comic out for men, it would no longer work as a joke.

Ofcourse it wouldn’t. It’s a stereotype about women. If you made the same joke about men it wouldn’t be funny because it would be completely made up. Equivalent joke about men would be two guys being nasty and talking shit to eachother but neither actually meaning it.