If i understand your language right, all txs less than 1 million sats then are blocked onchain; they are then forced to move to layers anchored in the chain, such as Lightning.
Those who cannot afford to open channels, are forced into collaborative custody, such as fedimints and cashu.
Owners of small utxos can simply bring them to fedimints as private keys to be included in batched channel openings, and credited to owners.
There, even one sat can already move, with fees in milisats.
No?
I said that as far as we are going forward in bitcoin distribution, UTXO's are getting smaller and smaller. With the fees like that, there's no point to moving small UTXOs: you will have to pay up to 25% in fees for EVERY 100000 sats UTXO. So the right way is to do nothing in this case. Demand for transactions will decrease, but the fiat price of bitcoin will increase (because of lack of supply).
I mean, these fees have nothing in common with the future fees. They are going to be much lower in sats term, but higher in fiat term.
But if I'm wrong, only large UTXOs will have place in the future. Then there's no mass adoption.