When they removed it from the vendor in BfA.
Point being that Blizzard changes their mind when they see fit and that no Q&A with a single person is a final answer on anything.
No. I disagreed that it should never happen. The statement that it should never happen is undeniably there whether people budged on that AFTERWARDS or not.
I then agreed that it should be more difficult if it does happen. We up to date now? Sorry I clipped out all of the fluff and condescension but that seems to be the meat of your reply.
Generally speaking people will present their own position on a thing and then argue from that position. Rather than simply adopting the most extreme position on every subject they see.
I agree that there are people who would like it if delves dropped mythic track at the current difficulty but that doesn’t mean I have to argue on their behalf.