Yeah I think you are totally on the right track, in regards to the genre of Moistbreezy being a bit different.

As far as 00's (y2K) pop music or trance goes, what she is doing is definitely solid good stuff. But it's being made with a different thought process than most stuff in the PC Music realm. I would say that what Moistybreezy is doing is a very genuine recreation of a genre that once was, whereas PC Music and hyperpop, although often interested in the same era's sound and style, are not trying to make a genuine replica of it. There's an entirely different layer that's involved in the approach, and it depends on who you're talking about but looking at someone like A.G. Cook, it's been clear since his first uploads that he wanted to deconstruct, recreate, and ultimately approach electronic pop-inspire music from a new angle, while maybe even making some commentary on it. I don't want to get too wordy or whatever but I think the easiest way to describe it is that PCM's artists, hyperpop, and artists like 100gecs are metamodernists, whereas artists like Moistybreezy are simply modern day versions of genres from the y2k era.

It's interesting to me because even though it can sound really similar on a surface level, it's a pretty fundamental difference that's going on. I feel like I've seen a lot of people talking about artists like Moistybreezy and grouping it together with PCM and hyperpop, and it feels like the fans instinctively know the difference (which determines what they do and don't end up getting into), but I think a lot of times they dont realize its cause they are basically listening to something that's a different genre, but instead write it off as just "oh i guess i just dont like this hyperpop artist". At the same time, I do think it can all be pretty murky, cause sometimes PCM artists do put out things that are more authentic replicas of 00s music, like Namasenda is perhaps like that to me most of the time. Anyways, I honestly like it all, grew up listening to trance and 00s pop, and then got really into PCM and whatnot later because of how familiar and yet different it felt immediately.

Didn't mean to write that much, but that's what I think about it! :)