I like that they have XMR and no middlemen. I use usenight, which does take crypto but has neither of those features - but costs $20/yr instead of $20/quarter.
Yep, that's what I'm doing (except different NAS). I've got the Proton connection at my firewall, but you can use a gluetun container and route your other containers through that as well.
I'll admit to being a little nervous to stand up something on my server that's explicitly named for looting/pillaging, just in case I'm the mark and not the operator.
EDIT: Why is the app having my browser try to load googleads and doubleclick.net ads? I assume the play.google.com and youtube.com integrations are for some additional content?
That just changes the port of the bundled UI; it doesn't allow you to connect a UI to a separate client.