Why are the "jews" trying to take down Dean Berry Ministries' website if he's not speaking the truth?

I've read a number of the articles at DBM about them not being Real Jews but descendants of a Mongolian tribe called the Khazars. The'yre simply not God's Chosen as they'd have us believe. This same conclusion had been arrived at by a billion Christians and Muslims, at least. It's well-researched and well-documented as the truth.