"followed up by someone with 5k karma"

Incorrect. Maybe the reply was made in haste

Anytime a comment of mine receives lots of upvoites thare will always be some snarky replies. It's almost guaranteed

These will sometimes include personal attacks

Note all I did here was relate a personal anecdote: I'm not using "AI". HN commenters do this every day, many times off-topic

I expressed no opinion. I did not make any argument, prediction or "recommendation". All I did was state a fact, 100% on-topic