No, guy, you reached a conclusion with a bad premise.
The Democrats passed Obamacare under Reconciliation for the express, clear, specific reason that they COULD NOT change the filibuster rules — because their OWN Senators would not approve of it.
That is absolutely no difference from what the GOP faces. Many of their own won’t vote to gut the filibuster, because they rightly understand it’s a good process. It protects the minority. Frankly, it protects the majority, too, from overreach.
You have this wrong. The reason the Democrats would not change in a future majority is same as it was with past majorities. It has nothing to do with polite, or collegiality. It has to do with understanding it protects the minority, which they will be again someday.
It requires major things to have major support. That’s a very good thing. GOP Senators who would oppose gutting the Filibuster for healthcare are being wise. They are likely going to have to do it for the USSC, and that’s far more important. They’ll even have help on the Dem side on that issue, who will be trying to find ways for the GOP not to need to use nuclear option. The rationale is already out there:
“Not this justice. This is a Scalia replacement. It’s just replacing a conservative with another, so don’t push them into destroying something valuable like the filibuster. If a liberal justice dies, then we fight with everything we have, but not for this one.”
You greatly underestimate the understanding on the Dem side of the Senate aisle. They would not gut the filibuster in 2010 and they won’t in the future either.