Perhaps he is. I myself have no way of knowing. Since you do, you should consider posting the facts here so that we may all profit.
But the most damning evidence of the ecumenical mindset is the section that condemns liberal ecumenicism with moslems even as it supports liberal ecumenicism with Jews.
The author can't seem to make up his mind. Is liberal ecumenicism a good thing, or a bad thing???
Bruce Bawer, liberal ecumenist? He's not concerned with religion here. He's writing from a political point of view.
Most people here would probably agree with him about Christianity, Judaism, and Islam, though one would hope not about his praise for Meotti's cheap shot attack sub-journalism.
BTW, sometimes you can judge a book by its cover:
Pushing a lot of buttons there.