I could be wrong, but it feels to me less like the author is throwing stuff at the wall insomuch as they're intentionally elaborating on the definition of 'otaku' to the wide range of specific interests that can fall under that umbrella rather than a narrow classical stereotype. These people are passionate about manga, some of them. But also TCGs, and gachas, obscure music, (a specific subset of) furry characters, and a lot of other things that fully mainstream folks might be barely aware exist.
Airi might be an otaku herself, but even she runs up against topics others are highly into that she herself is only vaguely aware of at best, making her attempts to bridge the gap only marginally different than if she were indeed the perky always-Gal she attempts to put on as a front. It's a story about allowing yourself to have an open mind, and it is introducing those specific interests in yes, a comedic tone often times, but also a positive one. The chunni chapter is handled with compassion for the most part, and the most negative the series as a whole really got was Mari getting called out for aping knowledgeability so she could look down on people, and it's good she got called out early before that mutated into gatekeeping.
As for the current situation, I've already put down my guesses. Did they swap, did Airi just get some triggers, or something else? The single page tease we've gotten is a bit cheeky, guess we just wait and see.