Because they couldn't even wait an hour to announce they were take the power at all costs and damn the consequences approach.
First, there's 4 solid conservatives, 3 liberals, and one wishy washy consevative, so if it ends up being a purely partisan vote, Trump is safe no matter what.
Secondly, given that this is another step down the path towards letting one party try a massively destablizing power grab that could lead to the collapse of the republic (either via one party seize power or starting a civil war), yes I'd rather they not do this.
If the norm you're trying to cite needs a flowchart to prove, while the other side needs a 10 second soundbite of McConnell, you've already lost the battle for public opinion.
Nice speech. I hope it doesn't end up engraved on the country's tombstone.
It seems like we're all stuck in a giant prisoner's dilemma, and we all know we're in a prisoner's dilemma, but both of the prisoners got arrested wearing a "I betray in prisoner's dilemmas" T-shirt and they're frantically trying to out-backstab the other side before they get stabbed themselves.