Yeah the democrats are at fault here too. Clinton had eight years to rollback any damage from Nixon and Reagan. Obama had eight years to rollback any damage from them + Bush. Biden had four years to rollback any damage from them + Trump.
One could argue that the courts or congress/senate may not have been favorable during their time, but that wasn't true during the entire combined 20 years they had.
(siddnote - I think "nadir" was the answer to a crossword clue I was stumped on. I'd never heard it before that. And I thought I'd never hear it again. Interesting coincidence!)