Why would you say that? I'm not a fan of the guy, because I think he's searching for unicorns, but he is 100% engaging in pure science. Hypothesis, experiment, data, falsify, repeat.

It literally is, and in many circles (illicit drugs, bodybuilding, cosmestic...) it's thanks to those community that we have early-on data. Go look for information about latest psychedelic derivatives, user reviews is the only thing we have accessible, it is Science, a doctor is aware of side-effects because of reporting, user reporting (assuming relatively trusted) is genuinely useful for the world.

It's also useful because most AI models are able to talk about what the community is saying about drugs and the model can correlate that with many other things and it does enhance diagnostic and it's quite useful to train medical models.

See a relatively "new" example is about Vapes, there has been deaths and so-on due to people experimenting with illicit ones, without those reports, we will never have in future Science book and AI models that some chemicals are dangerous to inhale or whatever (it's a shitty example but you get my point)