We already survive with lots of impacts like this already. Gossip can't see zaps, but it is still usable. Many clients can't see all the posts of the people they follow, but they are still usable. Many links can't be followed because the client cant find which relay that event is on. We can't count all the 'likes' or all the zap receipt totals in this decentralized model. Polls don't show up in gossip. Some people don't see note "subject" lines. Etc.

Fiatjaf's saying "embrace the chaos" applies.

I do think we do need very good interoperability where core functionality is concerned, and I would like that core functionality to slowly grow and harden. But there will always be a large set of optional features only available in a scattered set of clients and/or relays. I'm counting NIP-95 as an optional thing that I won't participate in.

YES, users will be confused about all of this. I don't know how to solve that problem. Forcing everybody onto the same page isn't a realistic solution, we are cats and you cannot herd cats.