Consolidation isn't about only having a single utxo.

It's about having a variety of responsibly sized utxos that you can choose to spend for different needs and in different fee environments.

For the layperson, the main goal of those of us who condone utxo management is educating newbies so they can ensure they keep their utxos above the dust limit.

DCA is great, but not if you end up with a bag full of utxos so small that they are uneconomic. This is the value of responsible consolidation.