“there is the fact that states are literally addicted to federal money”
THis is the major factor. It won’t be easy, that for sure, but I think it’s easier to assert Constitutional powers you already have rather than attempt to repeal an existing amendment.
Well, as co-opted as the system has become, I’m not sure either approach - repeal or re-assert - is feasible at this juncture. I think for the states to re-assert, they will have to do something big, like an Art. V convention, where you look at one issue at a time.