I have been threatened with a permanent ban previously, for using robust language in argument. I have never been one to suffer fools gladly. IIRC, I have had about half a dozen posting holidays.
IMO if there is evidence of threats, or persistent stalking by another poster, that should be grounds for a suspension or ban.
I also lose patience with posters who put the same arguments or data on a thread multiple times, as if that gives them greater validity.
Say your piece, most of us can comprehend what's posted the first time.
When a thread descends into bickering, I am out of there.