[mfost]

There is a good technical reason behind that. As far as I can see crossplay doesn't work well at all in the game right now. Mostly issues where inviting friends to play is broken. This isn't surprising when you do not have a common identity system to fallback on for all players.

[shkkmo]

There are constent issues, but I have a large number of hours spent playing on my steam deck with a PS5 player.