ho boy, here we go again.
At this point in time that conflict has been going on for so long, I have no clue anymore who started it. So all I can do is judge both sides by their current actions without historical justification which, to me, results in fanatical religious fascists fighting fanatical religious fascists with neither side caring for civilian casualties. Not exactly a situation in which I'd support any side tbh.
Imo if you're going to be the only one who would use the instance it is not worth it. Instead look for an instance that lines up with your personal interests (maybe check out the db0 instance).
Content federation basically works on a subscription model so you will only see content from other instances if someonen your instance went out of their way to subscribe to it. Smaller instances suffer under this as they might not even see popular communities from other instances.