I think it’s fair to say, that the left has generally pulled the right, left as well. One of the benefits of having sane Republicans come over, is to possible reverse the leftward trend; or at least slow it down.
So you mean both the left and the right go back to neoconservatism that practically destroyed the country through the Clinton, Bush, and Obama years?
That's worse than just plunging head long into an ideological extreme. At least ideological extremes get push back.