I think the Conservatives primarily want power redistributed to whoever's on their side in any given decade. The particular mechanisms and bureaucracies don't really matter, and it's fine if democratic pillars are destroyed in the process as long as "their guys" ultimately get what they want. The liberals seem more willing to play by the rules and not leave a bunch of collateral damage along the way, which is why they keep losing... every small by-the-book gain is overturned and overpowered tenfold with the next Conservative administration.
FWIW I think there's a difference here between the big-C Conservative politicians and judges who are hopelessly corrupt, vs the run-of-the-mill small-c conservative voters who keep voting for them because of virtue signals (guns, abortion, defense, anti-wokism, whatever). The corruption isn't really a high concern to them, either a positive or negative, as long as they get their values enshrined into political power.
It's not really SCOTUS vs the Executive, it's whatever pathway to power they have available at any given juncture in history. They're very good at pivoting and projecting! Not to say it's admirable, but it's undoubtedly very effective, having captured almost the entirety of the US power structure over the last decade while also striving to make sure their liberal opponents cannot easily reverse those gains. Having so thoroughly captured SCOTUS that they can rewrite/reinterpret the Constitution at will is just the latest move in a long series of such maneuvers over the past decades, skillfully executed.