I always felt so welcome in furry circles, to the point where finding out someone is a furry basically makes them 100% safe to talk about subjects like being trans around them. It seems like with other groups, like video games or art or different hobbies, being in the same circle and getting to know someone doesn't mean they won't turn into an ass if they find out you're LGBTQ+. Furries just seem so much more open and extremely unlikely to be opposed to how someone identifies, you know?
As for myself, I always found myself (FtM btw) using female fursonas until I was pretty sure I might be trans, and made my first male sona. It felt really good. I also just have mostly male characters and sorta always did, so maybe that shoulda been my first hint lmao. Honestly surprised I never had a male sona "just because" before I found myself.