Re: Homeopathy or Supplements
OK, let's take those one by one.
Lockdowns were a terrible idea.
First of all, "a terrible idea" is a value judgment. That is to say, it says more about your values and priorities than anything objectively measurable in the outside world. So it's hard to call it "deluded".
Having said that, I would say that the delusion here is in believing you can make a simple blanket statement like that - well, at all. Practically every "lockdown" was different, implemented in a different environment with different rules and circumstances. Some of them worked, some didn't.
New Zealand's first lockdown, for one, was undeniably a brilliant idea. Thanks to it, we had 15 months of almost-normal life and almost-full-strength economic activity (minus tourism, which is an important but still only small part of the whole economy) while the rest of the world was going through wave after wave of shutdowns and deaths by the million. Other lockdowns in other places, and a later lockdown in NZ, certainly failed in varying degrees and for various reasons, but that doesn't detract from the breathtaking success of the first one.
Masks don't work to significantly reduce the spread of respiratory viruses.
"Significantly" is a weasel word, of course. Most people who have studied the subject say that masks do make a difference in some situations. The statistical evidence is not clear, but anyone who claims on that basis to have definitive knowledge on the negative side is - yes, I think "deluded" is a reasonable word there.
Covid probably came from an accidental lab leak.
Possibly. Possibly not. Again, use of the word "probably" suggests an unwarrantable level of confidence in your conclusion. Delusion.
Covid vaccines are nowhere near as safe or effective as we were led to believe.
I don't know what you were led to believe, but I'm not aware of any major revisions to the information I saw about them.
Net Zero is a terrible idea. Even if the whole of europe ceased to exist tomorrow, our emissions would get swallowed up by China.
Again with the "terrible idea" thing. It depends what you think the point is, or how you think reality is likely to unfold in either scenario. I suggest that for "the whole of Europe" to achieve "net zero" would involve pioneering technologies, social and economic changes that would quickly be adopted by other countries, including China.
Religion is stupid (OK that one goes back well beyond 2020)
Again with the value judgment. What do you think "religion" is trying to do? I'm not sure how you can go about answering that, but when you have answered it, then you can rationally assess its actions and measure them against its success criteria and defend the statement that "it's stupid". But I suggest not here, because no-one is going to read a 10,000 word essay on the topic, which is about the minimum it would take.
Of course it would entail attributing volition and intelligence to an abstract idea. Not sure what you'd call that... But you've already done that much with your statement, so clearly you've made your peace with that bit.