It is something that really hasn't been "a thing" in the furry fandom for a very long time. Really, you saw it most often with artists such as Dark Natasha and Terrie Smith who have been around for decades and literally have just maintained the same website/domain for 25+ years. FurAffinity and the like really did obsolete independent artist websites by becoming the fandom's equivalent of PayPal, but as they've lost their vicegrip on the community people are starting to migrate back to personal spaces (for a multitude of reasons).
Coming across someone with a Neocities (etc) website doesn't necessarily automatically mean it's troon-coded slop, it's just that these platforms are the ones most accessible to people looking to setup their own websites without needing to jump through a ton of hoops. They are generally worth checking out, and bookmarking accordingly if it's something you enjoy. I actually am quite fond of those who take the time to create a space for themselves, it is the literal polar opposite of using that PostyBird shit that just shotgun blasts your bullshit onto every platform where you have an account. I will check out someone's personal website that they made themselves, but when I see "posted with PostyBird" on a submission I generally will mute the user because it means they have zero investment in whatever platform they're posting their content to.
Someday we will return to the era of "BOOKMARK THIS PAGE" and "SIGN MY GUESTBOOK".