Political parties are nimble enough to recognize a losing hand and adjust over time. For the Republican party in particular this is true -- we say all the time on here that they only care about the acquisition and use of power, not enacting some underlying philosophy with that power. They just tried to gain power to undemocratic way and ended up losing the House, Senate, and Presidency. I think they'll start realizing they currently have a losing hand in pretty short order, have to deal with the realities of needing actual votes, and somehow adjust to grab additional voters. My guess is that will mean putting a veneer of respectability back on the party so that young votes and non-racist votes are easier to get.
I don't think they can adjust soon enough that they will avoid paying for it for at least one more election cycle though. I think we are in for crazy town Trump idolatry for at least until 2022 because Trump, Gaetz, Cruz, et al have the biggest microphones and will fight to keep it that way as long as they can. The consequences of this path won't be fully accepted until another series of losses. Then they will lose their influence.