I like the fediverse but the centralised nature of reddit is much less confusing. Really I would probably see where the communities are and stay wherever is most convenient. If Reddit did undo their changes then the chances are a few communities might move back to reddit or stay there, and the app devs may also cancel plans to make other fediverse clients, so it would be a tricky decision for me in my mind.

Reddit is the community more than it is the site in my mind.