I maybe should have phrased it differently:
If it turned out to be true that he's not legally qualified to be President, do we do what the law and right demands, or go with the "It would cause too much disruption!" argument and let him stay in?
Messy as hell either way. If we hold to the law, it means
He's out of office, immediately.
EVERY law, act, executive order, ANYTHING signed into effect by him is void.
Every appointee to any position is out.
And, of course, we'd wind up with Biden in the Oval Office(there's a nightmare for you).
If we don't do the above?
EVERYthing he's done or would do in the future is tainted. This is not something Congress could throw a quick law through to get over(and who would sign it?); we're talking having to actually amend the Constitution to change that. And God, wouldn't there be a mess while you were trying to do it? And lawsuits on everything in sight. Because "He was not a valid President when he signed/appointed/whatever.", and rightly so.
So the question, better put, is "Would you favor follow the law and let the chips fall, or somehow letting him stay in the office(IF a legal way could be found) so as to minimize disruption?(it wouldn't, the disruption might actually be worse, but that would be the argument)