i think this really speaks to the broader discussion of what counts as "furry music".
some people (Cassidy Civet (🤮)) think the only artists who count as "furry" are those who explicitly put UwU OwO shit about paws and yiff in their songs. some people (Patricia Taxxon) try to categorize a sort of "transcendental furriness" that unites all works made by furries through their backgrounds and personalities influencing their musical works. some people (most furry artists i know) say that any musician who's actively a furry is a furry musician.
at this point, i think what truly makes someone a furry musician is if they interact with furry music culture and if they support all the other artists within it. you don't need to have your fursona on the coverart to communicate that you're a part of this community; you can also do that by interacting with other furry artists, collaborating with them, sharing their music, vouching for them, et cetera.
one of my friends exclusively makes DAWless ambient techno and from just a glance at her artist name and coverarts and all of that, i don't think anyone could guess that she's a furry. but like... she's still obviously a furry, that's how we became friends, on virtually all her other social media platforms outside of Soundcloud her profile picture is her fursona.
Car Seat Headrest is a furry musician. and i'm not saying that because of his works at all; i've still yet to listen to most of it, though i can imagine there's some furry-themed lyrics in some of it. but he got mainstream appeal through being a rock musician first and foremost, while everyone speculated on him being a furry in the meantime. he's a furry musician not because he makes "furry music", but because he is a musician who operates within the furry scene; he owns a fursuit and goes to cons and works together with other furry musicians to uplift them.
trying to quantify what counts as furry music based on how many furry tropes you communicate in your works and your appearance is silly! i mean... it's totally fine if people want to do that; heck, i proudly display my sona on all my works because it's a big part of how i want to express myself. but what's much more important than how many UwUs i put in my lyrics is whether i care about exploring and fostering furry music as a scene.
my earliest exposures to furry music weren’t stuff like paws to the wall, it was like.. mp3 uploads on furaffinity of normal techno (or what we’d now call edm), rock music, or the variety of genres from the musician now known as emma essex.
there were of course some overtly furry things - 69ing Gay Raccoons from Corsi, and some interesting collaborative projects like Furry x 60, a compilation of 1-minute tracks from a variety of furs and genres, organised by Kurrel the Raven.