I know what you mean in theory, but in practice it's almost no different to how Bitcoin users audit it's supply. You just run a node like any Monero user would. Even among the small fraction of Bitcoin users who actually run a node, they are simply trusting their node software to properly audit for them. They aren't actually doing it themselves. There are ~1 billion transaction on Bitcoins chain right now and more are added every ten minutes. No one is actually auditing that. If simply trusting your node to audit for you is your acceptable criteria for auditing than there is no difference to running a Monero node.

Still cool that you are open to using Monero for it's transactional privacy