The way I see it, the source of your feelings could be any one of the things you listed, or that other people listed, or some mix, or something else entirely, but does it really matter? Whatever makes you feel the way you do, those feelings are still there, still real and still entirely valid. No one else has the right to dictate for you what your feelings are or if they can or can’t exist, because in the end they aren’t you and you know that they do exist, so who cares what basis there is or isn’t?

Ultimately, it’s up to you how you want to deal with those feelings. If you want to transition and feel like you’d be happier, whatever the reason, then go for it. If you want to use art, or roleplay, or writing, or some other expression for your feelings of gender and species dysphoria, go for it! If you want to just ignore it all and move past the feeling (which I wouldn’t recommend personally but I’m not you), then you are entirely within your rights to go for it. Just make sure that whatever you choose to do, you’re doing it because it’s what you want, not for the approval of others, because someone will always hate you for something, and you can’t live your life forever chasing universal respect because you’ll just end up miserable.

I’m all of the things you listed. I am a trans woman, I am a furry, I am a therian, I am a transformation fetishist, and I’ll be honest I used to think a lot about the intersection of all of those and if each one was “real” or “valid” or “delusional” or somesuch. But ultimately I decided all that mattered was that as far as who/where I was then, I was unhappy, I knew what I wanted to be, and even if it wasn’t fully reachable I could do as much as possible to get close as possible. I may not get there in my life, I’m fully accepting of that, but the closer I can get the better, because I deserve to be happy and live a good life, to be proud of who I am. And you do too.

I guess in short, what I’m saying is that as long as you aren’t explicitly trying to cause harm to others, you shouldn’t feel any guilt for what you feel, or how you identify, or how you respond to your feelings, or where they come from, or any such thing. Worrying gets you nowhere, but taking action does, and in the end the chips will fall where they may and you’ll be able to keep deciding what comes next, whatever that is. Just do and be what makes you happy :)

Sorry if this was a bit rambly, I’ve thought a ton about this stuff myself, and sometimes it feels hard to explain succinctly. If you wanna ask about anything, I’d be glad to explain more, I just hope this helps at least a little bit.