Very simple. Wait until fees aren't $100. Nothing has happened to the utxo.

Gotcha. Its not a functionality question. Its true that if fees go back down, smaller utxos will be usable. It is also true that they are unusable during high fee envirnonments. Its an odd point to be a stickler about.

You shouldn't have a $100 UTXO it you've been managing your wallet properly.

Correct