I wish I had WiFi because composing my thoughts on a mobile is a cognitive bottleneck for me and this discussion needs a proper keyboard.
Personally, I don’t subscribe to the notion that one’s belief system needs to be internally consistent. Which is just as well, because the dire circumstances of war (based on what I’ve read) , will pit your ideals against one another or at the very least demand prioritization of one over another.
I had something else to say but again, my fingers can’t keep up with my brain so I’ll have to wait for it to come back.
Edit: Right. So the other thing I was going to say is that -isms tend to be densely packed (and not always carefully inspected) systems of beliefs themselves. Talking about these -isms as if they were sets of beliefs where exclusion=incompatibility seems (to me) a unnecessary quantitization that ignores the messy roots of those -isms as well as our human tendency to embrace conflicting beliefs.
Again, that tendency isn’t a bad thing. Imagine someone who had Kantean beliefs about lying and applied that in their daily life without exception. Their social life would be hell.