At the end of their term, the voters go vote for someone else in the primaries, then Fetterman has to try and run as an independent or convince some other party to nominate him. During the term, it depends on the individual state if they have a procedure for the voters to recall an elected official or not (looks like Pennsylvania does not).
The primaries are where we push the internal reform. The pitifully low primary turnout is what allows unpopular incumbents to coast on autopilot to the right for the donor money.
It doesn't provide a mechanism for removal. It adds clearer definitions of when to effect a temporary transference of power (for example the President is sick/injured but receiving some treatment but will recover, like President Cleveland having surgery for cancer), and how a vacant office of Vice President will be filled (for example the President has died or resigned or was removed after impeachment and the VP ha been sworn in as President, like Jonhson after the Kennedy assassination). The temporary nature here is the operative part. The Vice President is still the Vice President, and under the amendment the President just has to inform Congress that they are fit to resume their duties and they automatically do so after 4 days unless the VP can get the Cabinet to again vote otherwise, and then it would go to Congress to resolve. A removed President doesn't have an avenue to just show up and say they're coming back.
I think they'd wait until after November, though. Doing it suddenly before the election would be a clear signal they expect to lose. So they'd try to ram it through in December, before the new Congress is sworn it.
But only the toilet has an open hole in the middle for your butt to hang down through, and you're usually not spending any time trying to push out a turd on any seat that's not a toilet.
Wilhelm Scream