Im joining in on the reddit ditching thing, and was kinda worried at first that i wouldnt be able to like use it the way i did reddit as it feels like a whole new place, but after engaging with posts and people and actually being a part of lemmy rather than being lurk mode all the time i was pleasantly surprised with how easy it is to become a member of the community, theres a reasonable amount of subs (or whatever the other word for em is) that fit my interests, enough linux content and shitposting for my liking, and the overall random posts made by people equally fed up with Leddit. (also i admit i used reddit a little cus there was this post on the fedora sub showing how to fix a sound issue i been having after a recent update)
I dont think its very political (whatever that means). The founders have political views that may not be so common in the west, but it doesnt mean anything for you personally. You can choose exactly what communities you want to follow and read about anyway. They are not forcing their beliefs on anyone.
This is why the choice of instance is mostly a matter of performance and trust that the admins behind it know what they are doing.
Lemmy.ml is the most popular instance and it will of course be bombarded with new users when they come, so its good to create accounts on a few other instances as well. This is the point of being distributed. Im reading and writing this from my own instance: https://lemmy.today. And I think thats just fantastic, that we can do that.