It wasn't just conservatives who gave Republicans that majority. There also were a lot of non-conservative populists, as well as a lot of swing voters who didn't like Hillary.
The point is that there is no "conservative" majority. There is a Republican majority. So for conservatives to insist on getting exactly what they want, when they don't have the votes to do that, is perfectionism.
I'm certainly glad our Founders and Patriarchs were not as lukewarm and wishy-washy as this generation when it comes to standing on immovable principles that they insisted upon to the point of being willing to hang for them.
Tyranny wholesale is imposed in the middle of the night by a rogue government without a single representative being allowed to read what they pass into "law", and here we argue about taking small steps to create an illusion of resistance while strengthening and entrenching said tyranny into permanence.
We should be ashamed, but instead we chastise 'perfection' and accept the premise that tyranny is our inevitable reality that we must accept and massage it so we can receive breadcrumbs of the liberty that was stolen from us by tyrants.