I was with you for the first half. And I also agree that people who sexualize animals are horrible. As do 99% of furries. But then, I'd say that 99% of the population in general is against it.
The furry community takes strong stance overall against sexualizing and abusing animals. I've never personally seen a circle or group where it's tolerated. Not to say that it doesn't exist anywhere, but just that it's not something you're likely to find without looking for it.
Furry anthropomorphise animals, they make models based on animals and bestiality among furries isn't elevated compared to the general population. It says more about you and the general population that they equate furries with something about sex.
Furries actively denounce sex with actual, real-life animals. Being into that is called zoophilia and if anyone in the furry fandom is caught even thinking about it, we kick them out faster than you can blink.
Do you suppose different fursona species have better and worse relation with one another, like astrology signs? That'd be funny and awesome at the same time
I've never heard it put that way before, but it's an interesting observation. A lot of animals are culturally associated with personality traits (e.g. clever foxes, loyal dogs, proud lions) and furries usually choose a species they relate to, so it creates a system where people tend to self-sort into various tribes based on values and personality type. Look at any decently popular species and you'll likely find that most of the people repping it share a common set of traits.