The risk here is that we fall into the trap of: “In the Beginning, was the Plan”. See https://www.smart-words.org/jokes/plan-beginning-assumptions... for details on how that works.

We can’t just throw away the old tests. We need them for regression purposes. We need them to ensure that the newly improved code as created based on the newly improved tests, is still fulfilling the design goals that we initially set out. And the initial tests that were created.

I think the Red Queen folks may have forgotten that point.