So he's in the wrong because of what others have said? You can't conflate his statement with others' to discredit him. That's a straw man argument. The definition of feedback is somewhere below, and I suggest you read it. He is correct that you are objectively wrong, and his saying that is not a personal attack, it's a logical victory. Don't enter a debate if you don't want to debate, especially when you're wholly unequipped.