The last time I tried a Samsung phone I returned it the same day I got it. The competing OS elements from Samsung’s ROM and the standard Android UI were really really off-putting to me. I can get an app having a unique style, but this was different OS elements looking and working differently.

Any games you already own on Steam or Epic will still need to launch those clients in order to run with GameHub. If you run Linux, then a lot of the work Steam does in the background with Proton to make things run will no longer be automatic.