Problem with Proof of Stake and “coin voting” in general

The problem with “voting by coins” is that most coins do not vote. This leaves a small fraction of UTXO to actually vote which is not representative and highly volatile since anyone risking to use idle keys to a large stash of coins can dramatically affect the voting outcome.

Most coins are locked up well “under matress” with multisig, time locks and possibly even with HSM-controlled keys. Also, pubkeys to long-term stashes do not want to be exposed from under their hashes in order to be better protected against a QC development in the long term.

In other words, most coins that matter, cannot and will not vote.

This leaves only the least important coins to perform voting. Obviously, the result of such voting will be worthless.