I haven't taken the time to ask the Obscura people about it or investigate their software at this point. Feel free to bring these concerns to their attention.

I do have some ideas on this kind of service and in particular how I would handle the Wireguard public keys. I'd be happy to work with Obscura or otherwise to implement these ideas once they are more complete.

As an aside, I am currently trying to create a Linux kernel patch or alternate Wireguard module to solve the timestamp issue by adding a randomly varying offset to the timestamp. Might publish it once I've got it working.