Apparently "epic" means something different these days.
Simple truth is it doesn't support all game, that's up to the developer and those that choose to opt out means those games wont be playable simple as that, so not really a true 100% compatibility.
Most have moved on from old games though, people are always saying they want new games so backwards compatibility isn't that big of a deal really, this might have been good a couple years ago but not any more.
No VR tech is going to be cheap.
Looks bad.
LOL mods.
Class act by Sony.