pointing out the theology of a particular denomination when it differs from orthodox beliefs of the faith, is not being rude. especially if it is a major deviation from the christian faith, being anti-trinitarian, for one.
he didn’t do any personal attacks, and you are free to refute any errors he wrote, and/or defend these beliefs, too.
He follows me to every thread I post or participate in. That's either rude or he has a man crush on me...not sure which.
I've engaged with him multiple times and patiently explained how he is wrong, but he's not content with that.
He is the perfect example of when to exercise this type of judgement:
Mat_7:6 "Do not give what is holy to the dogs; nor cast your pearls before swine, lest they trample them under their feet, and turn and tear you in pieces.
Now if you have questions I'll be glad to answer them as best as I can in good faith.