Does winboat have GPU support? Could be wrong but I was under the assumption that it works similarly to WinApps and can't have GPU passthrough to the virtualized windows install under the hood

Bottles and lutris mostly serve the same purpose. heroic might be easier so you can use umu for having a more unified experience with wine and proton but I haven't gotten around to playing with that yet.

I've never used winboat but it seams like a lot of... winbloat...

I would personally just use protontricks to install any needed sotware to the games own prefix but I'm pretty sure lutris, bottles, and heroic can all do this while making a clickable launch button for it, while starting the mod loaders my way requires manual intervention every time.

If you haven't already, check out linux vr adventures: https://lvra.gitlab.io/ I don't know anything about psvr but it might work with monado. i have the facebook shit mask so I use wivrn.

I don't understand why anyone would use this. Its not just running Windows apps in a Windows environment like WINE, it's a full installation of Windows in a VM, including all of the awful parts of running Windows. It's infinitely simpler to just use Windows in another partition.