This is why I don't consider the election to be over until Trump is actually, formally out of office. There's still room for shenanigans, however unlikely they may be to succeed. I think I hit upon a good metaphor for why this presents a bigger long-term threat to democracy than the actual attempt to hold onto power.
In this case, we have a lot of these institutions that're being tested to their limit. Institutions that, in most cases, are upheld by tradition and this idea of "the way democracy works" with the underlying legal framework not really seeing as much use. But, if those traditions are defied and the legal backing has to actually be utilized, that leaves the flaws in that legal framework exposed for future exploitation by more competent people.
I would take the transition of the Roman Republic into the Empire as a good example of this. Everyone thinks of the period of Julius Caesar and Emperor Augustus, but that's not the example I'd use. Instead I'd say the more fitting metaphor would be the period a century or more before that. The proscriptions, the Social Wars, the assassination of the Gracchi brothers, etc. The Roman Republic presents a solid example of a political institution where its checks and balances were carried by tradition with a legal framework backing things up. And when people defied those traditions, that exposed the legal framework's flaws and inadequacies, showing what ways one could get around those laws as well as revealing which laws are enforceable.
If it gets to the point where representatives are committing what would potentially qualify as sedition, and our ability to actually strip power from a president when their term ends is tested, it doesn't matter at all if the outcome is a failure or not. We've already gone past the point where tradition is no longer going to stop bad actors from acting in an undemocratic matter, and can now see just what laws will prove vulnerable to loopholes or unenforceable.
Worse, the 14th amendment discussion is a catch-22. If we give any clemency to the people actively pushing for installing a dictatorship, they learn that committing sedition doesn't carry actual consequences, and will regard the law as unenforceable should someone more competent end up in a position to try a proper coup. If we do punish them the way they deserve, that just sets a precedent for yet another method of political purges (see mention of proscriptions in the Roman Republic, above) that could then be legally abused by others later on.