Welcome to the boards, stherman44! I wouldn't sweat it too much. It's like reading The Da Vinci Code
. He throws out a lot of fancy sounding names and dates that seem impressive and historical to, say, this guy...I ain't never thought of it that way!
...but to anyone who's ever cracked the spine on a history book, even if they're not Orthodox, it's obvious he's way off base.
Look at all of the mistakes he makes right from the opening lines. Orthodoxy is a "group of religions"? The Orthodox Church began when a group of Jews went to Egypt and then were overwhelmed by pagan elements? Forget competing Christian ideologies for a moment, this stuff simply isn't historical. Either he's a lousy researcher, or worse, he's just flat out lying and assuming his audience won't know the difference. There are Protestant critiques of Orthodoxy out there that are far more formidable than this junk.