First coffee is good for you. Then coffee is bad for you. Then it is good for you. Then it is bad for you. etc
I think people lose confidence when science makes what appears to be absolute statements when they are changed in a few years time. Some of your examples are examples of this. Here are the choices in the poll that we were given:
Climate change is a hoax. - I don't know how many think it is a hoax but I'm sure many many people do not think it is a serious thing. It has been so oversold and powerfully so with other scientists contradicting, cheating on data, bullying etc. But nobody proposes going back to the stone ages. They just want to tax and spend.
Evolution never happened. I think there is no one that does not believe in natural selection within a species (microevolution). Perhaps I am wrong on that. With regards to origins of life and transformation of single cell animals to multicell organisms with specialized cells and organs (macroevolution) is a bit more of a stretch to think of as happening by pure chance.
The moon landings were all faked. - I grew up in Huntsville, Al where the space program was centered (rocket technology anyway) so there is not really a question in my mind. I have never met anyone who denied the moon landings but have seen internet musings on this. They are not very convincing to me.
Vaccinations can lead to autism. - I do not throw this out but am not sure of it. Back in the day we got a few vaccinations. Nowadays there are many more with many given in one shot. I can see where a small child could not handle all of it at once, but better able to handle it over a longer period of time. I personally know one family who claims this happened to their child and they are not the type to make this stuff up. So I don't know if it leads to autism, but I think there is reason to think that spacing out the vaccinations would probably be a better solution.
Genetically modified food is evil. - All of our food has been genetically altered if you believe in evolution. Man induced alteration is another matter and one I think is basically benign but I can see where some could be concerned about it.
Those are my thoughts on the various choices.
mspart