Not disagreeing with your points Askold but I can't help noticing a, the woman carries no burdens which fits in with the incel view of women as being more privileged than poor downtrodden incel men and b, she rejects him just for shits and giggles which fits in with the incel view of women being evil harpy succubi.
a) ok, but she doesn't have balloons either? I think it's clear that it's not meant to show the things she 'carries with her', to make her look explicitly privileged she'd look like the guy in the first panel
b) She doesn't reject him, consider he doesn't make an advance in the first place. She just walks past him.
It seems like your argument is 'this comic is bad because it was made by an incel, who believe bad things'. As opposed to anything about the comic, which seems a pretty straightforward 'loneliness sucks' message.
and, y'know, loneliness does suck. Incels are not wrong about that.