This is so ridiculously over-the-top - and so incredibly obviously not the category of change that is being discussed here - that I have trouble believing you really mean it. Like, come on dude.
The claim was that morality only ever improves with younger generations, that things only ever get better.
It's a stupid claim and I pointed out an obvious counter example.
Many people who lived in China during and after the Cultural Revolution, and in the former Soviet Union, say the way that many people talk in universities today are starting to sound like the people in power in the places they came from.
Yes - it's so stupid, in fact, that this extreme version that you are interpreting it as is obviously not what we're talking about here. It really feels like either a) HN-sterotypical-pedantic-literalism; or b) a bunch of bad-faith strawmanning. Neither are helpful.
