But if the GOP now validates the Reid Rule then you can kiss the filibuster goodbye in the Senate.The Reid Rule is in effect now, this is all irrelevant.
Maybe kissing it goodbye would be the best thing anyway. There is no filibuster rule written in the Constitution.
The only supermajorities required by the Constitution are (1) to amend the constitution and (2) to convict the POTUS by the Senate during impeachment.