the same way that the utxos you get from a trustless LN swap or a Liquid peg-out are completely random utxos that aren't deterministically linked to what went in.

if you *really* use bitcoin in a purely circular economy the same limits to utxo analysis as cash apply.

every bill has a serial number; and yet it is meaningless.

every utxo that comes out of a lightning swap; liquid pegout; coinjoin; is the same.