It's a bit of a shame that Librem Tunnel doesn't use WireGuard, though I imagine they'll switch once it's in mainline. Otherwise, seems like a pretty neat idea -- it could open the door to more lay-people using open protocols like Matrix without everyone jumping on Matrix.org for free or having to self-host. I am interested to see how the Librem Files/Backup system will work if it comes about (I would guess NextCloud…
It's a bit of a shame that WireGuard still requires out of tree components to work.. I'm rooting for it to get accepted/merged, but until it does it just becomes a greater risk to build a business off of it.