Pandemics. People with Mysterious Brain Diseases. UAPs being talked about seriously. WTF has the world come to?
He studied biology, but biology is a very wide area. He studies some tiny area of biology, looking at the profile it looks like some parts of animals and cancer, but nothing about plants IIUC. It looks relevant for the discussion about brain damage, but not for the discussion about weird metals.
Anyway, I don't see anything about these topics in the published peer review papers. So it's just an opinion, like yours or mine. (And anyway, not all peer review articles are good, some journals are very bad, but that's another can of worms.)
He probably has a tenure position, so it's very difficult to fire him. Perhaps he is very good in his area, but has a weird side projects. If he does not make some extremely outraging claims, nobody will fire him.
Entirely possible his weird side projects are wrong, but seeing smart people tackle the weirdness of UFOlogy is fun, even if they're on the wrong track.