If he were heading up a Christianity forum and presenting himself as the picture of Christian leadership in the church, your remarks might be appropriate. This comes across as no more than a personal attack. That forum is his own, I don't frequent it personally but if you don't like him, stay off it. He has no obligation to conform to your vision of Christianity, no more than you do to mine.
Surely you can find a better use for your time. Visit the sick, feed the poor, etc.