I intrepret this a little differently.
after 60 days inactivity, the recovery account can set your account ownership to the reset account. In this case it is null. So null will own you lr account.
However, I assume setting it to null means the feature is disabled.
it could be useful if you accidentally lose your keys and were fortunate to choose someone competent and trustworthy to help.
I do not interpret it this way.
The Owner Authority is being changed to a new Owner Authority.
This means the Owner key is being changed.
If what you said is true you wouldn't need to generate a new key,
yet the documentation clearly states the need for an AuthorityType (this is a key)
Well if that is correct, it is much too dangerous to use unless you are your own recovery account which eliminates most use cases anyway. However, there is still a need for a new key and it would work similar to account recovery, except recent owner key wouldn't be necessary.
To clarify, the way I think it should work is if inactive for 6 months, 'owner key' change is permissible by 'reset account' with confirmation from 'recovery account'. 'reset account' would send 'recovery account' a 'public owner key', however unlike recovery account procedure, an existing 'private owner key' that was valid within past 30 days wouldn't be required.
The reason why the recovery account would be required to provide confirmation is if the inactive account was reported as stolen. Also, the recovery account could at least try and contact the inactive person to see if they are alive and agree.
Using the reset account on an alt account would work very well.
You could even save the owner key of the alt account on the cloud.
If you ever lost your keys you could recover your main account with the dummy alt account.
that's a good idea. I'd probably want to share this with a close relative, too. Or there is a service with google that emails various people if you go inactive there. I've set it up with some instructions, but nothing too risky like a private key.