This was his response to Acadia:

"Why do members of this forum have to spout the equivalent of old wives tales over and over and over. Is it just impossible for any of you to try proving anything?"

That is basically character assasination, not 'abrupt.' And hillariously enough, he didnt even manage to 'prove' anything himself so not only was he rude, he was rude and incompetant. Or is that too abrupt an assessment ?