So your previous criteria have been this:
1st, state that a “Major Constitutional Change” should require a 2/3 majority. You made no mention of whether it was by referendum.
I have asked you about the Lisbon Treaty which did not go through on 2/3 majority. I don’t exactly recall your get-out for this, but nope, your “principle” didn’t apply in this case.
Brexit - for some reason there’s no doubt this IS a “Major Constitutional Change” on planet Sid and should NOT have been passed.
Now we come to the repeal of the 8th Amendment to the Irish Constitution. Well, we now discover that REPEALING AN AMENDMENT is somehow not a “Major Constitutional Change” and therefore doesn’t require a 2/3 majority on planet Sid.
I’m beginning to see a pattern with things that do and do not qualify as “Major Constitutional Changes” requiring your 2/3 majority. Perhaps the readers can too.