I think they’re just keeping up the banter. As in, humourously acting like they don’t get your point just to keep the joke going (“So what if you’re a girl? That’s clearly you rn, just replace them with a short girl. Or are you saying girls cannot study the blade?”). Supporting that idea is the fact that “Study the blade” is a relatively well known internet meme at this point.

But I’m just an unrelated individual inserting myself into a random conversation with little reason, trying to interpret another person’s comment on a shitposting community.