Of course it's all speculation. Again, there are automated algorithms they use to moderate the platform that sometimes get things wrong. It's possible OP didn't break any rules but triggered some suspicious activity algorithm they have in place.
He stated he got "a little heated" or something to that effect.
quote-
But human beings, being what they are, passionate arguements do happen.
That statement is probably being mild for his post on here.
They didn't get it wrong.