Is it me or people haven’t really been talking about pjo7? Like there is barely posts about it
Yeah, no, a lot of people just aren't interested in/reading the CoTG trilogy. It was kind of the same with TOA and MCGA (and TKC) in just waning interest in the franchise after HoO, and particularly for TKC/MCGA/CoTG them not being main series installments. CoTG trilogy in particular is also getting a lot of general disinterest/distaste in how it's publicly acknowledged to be just advertisement for the show and the overall downward trajectory of quality in the series. Particularly a lot of people take issue with the absolutely useless plotlines of like CoTG trilogy and TSATS, the blatant glaring inconsistencies/frequent retcons, and the fact that both CotG trilogy and TSATS were post-Rick announcing that he wouldn't be making any more major Riordanverse installments (which he then almost immediately took back re: announcing TSATS as a PR move, in response to the negative reaction of how he responded to criticism about Piper and Sam and such). Also people really dislike that it's being tacked onto first series as a marketing move. Plus, the fact that because of that, it doesn't have it's own name for the trilogy, people don't really have a good means to discuss it because they don't know what to refer to it as. We're all outright refusing to call it PJatO like the RR marketing wants because it's not PJatO, but they failed to give us anything else to refer to it as because they don't want us to refer to it as anything else. So just... nobody's calling it anything, then. Nobody's discussing it at all.
In general though the lack of interest is not surprising, given most of the fandom checked out after HoO to begin with and things have been steadily dwindling since then. Also particularly that CoTG is a filler mini-series between HoO and TOA, so skipping it doesn't really mean you're missing any information. It's kind of a "this trilogy could have been a short story saga" type thing. Like, if CoTG was formatted like Demigods and Magicians, or Demigod Files/Demigod Diaries or something I think a lot more people would be interested in it! Even though not a ton of people read the companion books, they're generally more digestible for the audience than a whole new trilogy (sorry TKC and MCGA). Just think of how many people read Demigods and Magicians but not TKC. Honestly I genuinely think they would have had more success if they just did three new companion novels of short story anthologies. Like, hey, what if instead of really bad excessively long plots about Percy's quests for college, we get more short stories of Percy's little quests a la Singer of Apollo/Stolen Chariot/Sword of Hades/etc? And then to flesh out each book a little more you could do short stories for other beloved minor characters from first series to continue it being advertisement for the show and hype up other characters that will appear. Like, what about another Clarisse short story? Or a Chris short story? Or the Stolls or something? Some TA stuff? Who knows!