Reading anything good ?

I read all that gubbins back in my late teens/early twenties; various Colin Wilson books, and John Michell's 'The View Over Atlantis'. It's not so much a case of proving a negative, as pointing out factual errors which make the basis of the theory untenable, or call the credibility of the author into question.

There's also the Occam's razor thing; if a simple explanation fits the facts, there's no need to construct a more complicated, and less likely theory. Take for example the various conspiracy theories around COVID-19 (which variously blame the Chinese, the Yanks, and Big Pharma for either creating the virus, or pretending that a deadly virus exists when it doesn't). Not only do the theories contradict each other, the 'no such virus' theory implies that, firstly, a huge number of scientists have been conned into believing a fraud, when their knowledge and expertise would surely guard against that, and, secondly, that hundreds and thousands of deaths and serious illnesses around the world haven't actually happened. The sheer scale of such a fraud, and the huge numbers of people who would need to be complicit or wilfully ignorant of the true facts make it very difficult to believe, compared to the mundane reality of a disease crossing from animals to humans, as many other diseases have, and that scientists and governments are desperately playing catch-up.

I don't mind the UFO/Bermuda Triangle/Ancient aliens stuff per se, In itself it's harmless, but the COVID-19 and anti-vaccination conspiracy theories may well cost thousands of lives.