The main reason I'm still going to use the XIM and not use native for this game is precisely because I don't want to cross-play with PC users...
Reason: PC brings hacks, plain and simple. That is one of the main reasons I got away from PC gaming in the first place, got tired of the constant aimbots/wallhacks/etc.. I've heard it has got better but I'm very wary. This was put on full display when Sea of Thieves came out cross-play, everyone on console was getting raped by all the PC hackers. No thanks.