You may lose out on some content as instances have defederated from it. Although most of the hardcore tankies moved to lemmygrad.ml, leaving lemmy.ml as the clean PRC PR face so it'll probably not see as much defederation.
I think most of us are very new to this, we are learning about instances, server, communities, federation etc and how are they different, as reddit user it will take us time to grasp the general idea. But one thing great about lemmy is the freedom to choose instance , so if you don't like something hop to another instance where it resonates with your like, take a look at community which you follow and instance associated with it.
I feel these few months most of the user will be instance hopping 🤣, and slowly as time goes most of us will settle down to our new home. And I am sure you will find your answer too by then.
I guess follow your beliefs on this one. Also, it's possible that by you being there, you add to the number of active users on that instance, therefore increasing the appeal for newer users to join in and possibly donate to the founders. (which are tankies)