My understanding is that Bitcoin cannot sit forever at 1 sat/vbyte, at least not without considerable increases in exchange rate, without starving miners of revenue and ultimately hashrate.

Bitcoin doesn't have a "tail emission". It eventually FWIU needs fees to provide revenue to miners. There are LOTS of sources of fees if people use Bitcoin to transact and embrace it as transactional capital/currency/medium of exchange...

But it was not designed to "just sit." EVENTUALLY I believe it will be a MoE because it is a store of value in a world awash in fiat and debt and people will want it.

However we are not there today and IMO we do ourselves a disservice by 'becoming comfortable' with half-empty blocks it is not OK long term.