The trouble with libertarianism is that it assumes everyone has perfect knowledge. Right now I don't need to do a ton of research about what drugs I'm taking, or the food I'm eating, come to that, because there are agencies making sure that things I buy which are labeled as such will nearly never kill me. I don't want to spend my evenings reading about esoteric stuff that I don't have to care about now, I want to watch streaming or play computer games. Even if I did, Covid has already shown us how bad most people are at recognising good research from propaganda. I just don't feel like it would end well.