Yeah, Hal Lindsay may have jumped the shark back in the 70's.
And Tim LaHaye w/ Jerry Jenkins were right after him in the 90's. Some of the worse writing I have ever read. No depth, no character development. Thankfully I didn't have to spend a dime to read the drivel. It reminded me of L. Ron Hubbard's "Mission Earth" Series, Which was also written by a second rate SciFi writer.