As for the idea that Trump would have otherwise been removed by the Republican-dominated Senate ...
Now whatever you fill in the blank with ... the last word would be ABSURD!!!!!
I guarantee if Mr Trump strolled onto the Senate floor with a nice beaming halo and started shooting Democrats, no Republican would stop him and all of them would say that it was not an impeachable offense.
And that is the state of play in America today.
I think you'd have a few Republicans defect at that point, though, yes, you'd have some who would ask what the Democrats had done to deserve such a thing, and why the President was forced to defend himself in that manner, before declaring that Nothing Mattered Because He Hadn't Been Found Guilty In A Court Of Law
And the same is generally true of all of us here in the U.S. today. Tribalism is a helluva drug.