I'll take a shot. And please know that I am no fan of Donald Trump's.
The "engaged in insurrection or rebellion...or given aid or comfort to the enemies thereof" is vague, likely devised to be so vague in order that it can't be used frivously by the average joe (example: here in Kitchen Sink, LOL) OR a politician on the opposite side, persons with only their own bias as relates those terms and their application to government leadership.
Under Key Facts: All the conservative legal scholars, experts, law school professors weigh in, same on and on arguments. Other side does as well.
Under Chief Critic: The quote from McConnell, that "The amendment should be interpreted as... an enormous last result and maybe January 6 rose to that level...But whether it's actually an insurrection. I think it's a bit of a stretch." Multiple trial outcomes of the January 6 participants haven't yet reflected insurrection of the government of the United States as such. Some wanted Trump back in office, others went along, others were hotheads who admittedly just followed along for their own momentary glory. Some expressed embarrassment that they participated.
So with all those legal minds weighing in (both sides...I haven't the stamina to read it word for word or comment word for word), who is to say? Will it go to the Supreme Court?
But IMHO no, not any, none, nada drastic measure, especially one that threatens our form of government, should be taken on a "bit of a stretch."
Candy
Edited to say that I didn't answer the question posed, "How Many States..." Sorry. I have no idea.