I would certainly say there is no neemanus by him and I would not accept him for eidus or anything else. I would not let him touch any non-mevushal wine in my reshus or drink from a bottle that he poured from.
If anything, he is a koifer beikar and mumar lehachis of the first order – he is saying the Torah is immoral and is kovea Torah laitim instead of kovea itim laTorah. He is also davening in a moshav leitzim, but that is beside the point.
I knew one such person as well, but his standards were very low, somewhere around what just may be accepted at Chovelei Torah (or in the unfortunate Jewish world of the 1930’s to 1950’s) but nowhere else.