I think Block may have a different opinion than you....even after all his research. So do thousands of other readers.
Fair enough; he may well have come to a different conclusion. I know I'm not the only one to have reached the conclusion I've reached, among those who have read the whole book and spent some time studying it. But I don't pretend to have any statistics on the matter.
The fact that the UB is not authored by supermortals doesn't make it devoid of value. Some of the most spiritually powerful books I've ever read have been fiction. It's not as though revelation is the only game in town.