Yeah, even among metalheads, Glen Burton is pretty much universally recognized as a douche. Deicide always struck me as a poor man's Morbid Angel, except with less variety. So a really poor man's Morbid Angel.
They never really sounded much like Morbid Angel to me. But then I haven't heard everything by either of those bands.
Glen Benton is a total idiot and asshole, but in a thoroughly hilarious way. Also, a good vocalist.