lol I hope for the sake of your graduate students that your institution has a union. Your personality sounds exactly like the countless professors I've seen abuse their workers.
Ranting about a third party not involved in the discussion here, who nobody knows, is completely different than writing a response to someone, attacking them directly, and calling into question their professional capabilities directly, then doubling down and tripling down on that even after they asked you to stop is just rude and unnecessarily antagonistic. I asked you to make a point a couple times now and you don't have a point to make except to attack me personally, so kindly find someone else to troll.
edit: if you expect to be able to use your own anecdotes as evidence against unionization, expect them to actually be interrogated. if this is how you handle conflict with a random person on the internet, i shudder to imagine how you handle conflict with someone who works for you.