It does indeed sound like a mess.
Keybase had a better idea: tie various identities to something stronger (private key). That way you can say: I'm X on reddit, Y on HN, Z on YouTube, etc. I think Brave could follow the same model, just make it seamless (or partner with Keybase).
You could take it further. Why one and not multiple owners? Imagine you have a handle H on HN and then that handle publishes 5 messages of "My public key is XYZ". Then if someone were to donate to H through the system you could split it between participants.
And you could run with that! Why even split if you could build some crypto system of control on top of that through smart contracts that lets you basically manage a small organization.