Nah, I'm going to be straight with you. Most animated media these days revolves around anthropomorphism. It's completely normal that some kids grow up with a fondness for anthropomorphic characters and want to create their own characters. The furry fandom also has the distinction of being a very welcoming fandom, and frankly, a safehaven for all members of the LGBTQ+ community to feel normal and part of a tight community that has each other's backs.
The issue is in recent years, fringe hate groups that are full of not completely mentally sound people noticed this very welcoming atmosphere and figured they'd slide in and take advantage of it to bring more people into their hate groups. If you look at the large majority of furries who go to cons and are social people who are the ones actually representing the fandom's activities to the world at large, you'll see that near everyone in that group does not tolerate Nazis and would gladly punch a few in the face.
But the problem is that furries are an internet based fandom and anyone can consider themselves furry since it's a self applied label. If you know of a way to get Nazis to quit doing that, I'd love to hear it, because this belief that furries are weird people that faction themselves off and that it's no surprise that Nazis appeared is a completely misguided viewpoint.
Furries are completely normal people, and being part of a community with like minded people is something everyone who doesn't want to be alone will look for in their lives. Dressing up in costumes is something not unique to nerdom, no one harshly critiques cosplayers. Furries just tend to focus in on cartoon aspects because we all love cartoons. And that's not a weird thing either.