EDIT December 20, 2019
I decided to undelete the question because users, old and new, had better be aware of the suspension penalties.
A new contributor was recently suspended for twelve months in order to "cool down".
There's no point in me posting the user's name or the question where this lively debate took place. Nearly all the comments have been deleted in any case.
In all fairness, the user was stubborn and sometimes borderline rude in their replies. In one instance, the user considered my suggestions and Janus Bahs Jacquet's observations to be patronizing and condescending, despite clarifying our positions he persisted and we both "left" the scene of battle. However, when I returned a few hours later, I saw their reputation had been reduced to 1 wherein I automatically suspected, a week's suspension. Instead, the suspension was for a year.
Not having the diamond next to my name–so I have no way of knowing–I believe this is the user's first suspension. Although the user's attitude did deserve a warning and perhaps also a penalty, isn't one year a bit too much?
May I ask whether this was the user's first suspension? If so, why was such a severe penalty exacted on them, a new contributor whose only account, as far as I can tell, is on EL&U?