So in regards to the playerbase, check the specific games but a lot (maybe most?) Multiplayer games are cross plat now so the playerbase would be the same.

I know Forsaken is a timed exclusive (though I think it's a long time, maybe 2 years?) And GoW is I think on PC? PlayStation is great for exclusives, but with how much you have invested in Xbox it's hard for me to think the games would justify the switch.

Also, the PS5 is I believe larger than the XSX, so maybe relevant for putting it in your carry on?