Greetings,
I submitted a
pull request to correct some inaccuracies and inconsistencies in
BIP-85 but the original author (Ethan Kosakovsky) is unreachable via both email and
GitHub.
If Ethan is unreachable or unwilling to maintain BIP-85, I volunteer as a champion for BIP-85, as afforded by BIP-2:
It occasionally becomes necessary to transfer ownership of BIPs to a new champion... A good reason to transfer ownership is because the original author no longer has the time or interest in updating it or following through with the BIP process, or has fallen off the face of the 'net (i.e. is unreachable or not responding to email).
I'm a computer scientist who has implemented BIP-85, BIP-32, and BIP-39
here. I use BIP-85 and have written about its potential in other posts on this list.