Also, there is no such thing as IRREPARABLE damage to the U.S. Constitution. It’s own 2nd Amendment guarantees that.
Loss of 2A rights could be irreparable because as you point out it is the reset mechanism.
You are otherwise correct. No other part of the Constitution can be irreversibly damaged as long as The People retain the means and the will to reclaim their rights.
What concerns me more is the damage being done to citizens by socialist indoctrination experts in the public schools and MSM who inculcate the mistaken idea that the state should supersede the individual.
I fear that we may have already gone too far down that road.