That's because of your personal biases and perceptions. Not anything larger surrounding it or backing your opinion up. Unless they're out there performing indecent public acts. Where is the problem? And my knowledge in general they aren't. While some might have fetishes surrounding furries. Furries in and of themselves are not objectively a sexual fetish. No more than people cosplaying is.

Stop sexualizing everyone because of what you see on the Internet. They aren't fucking in public. People are allowed to be into fur suits and fursonas and also like fucking in them in private. That's like people being weirded out seeing you around kids because they know you had sex once.