"I am glad you kept the author's name anonymous" You assume this was to obscure something because he/she was not credible and your statement begs for the author's name to repudiate this false claim.
"You saved him a bunch of embarrassment." You not only assume or suggest the worse, you state clearly that the worse is that the author's position is an embarrassment. Seems my points are made.
Materialism is the underlying assumption. And, you clearly state that a hypothesis is speculative and contains assumptions. Sure a hypothesis is tested but the underlying assumption is that materialism ('belief') is reality. That is not the case and the author establishes that 'test' results are sometimes wanting and the conclusions disputed. It appears that materialism, rather than being seem as a belief has become unquestioned dogma.
Again, I will go with the true scientist out of Cambridge.