Anecdotally it seems that the people who take these things to the extremes (i.e. never have even a single drink because drinking alcohol is bad for you) tend to stress out about a lot of other things as well. Obviously if someone doesn't drink because they find the effects unpleasant that's different, but I'm talking about the kinds of people who for example are overly concerned about microplastics (to the point of not eating any food that has been stored in a plastic container), or air quality (co2 monitors in every room, etc), or diet (will not touch anything with nitrates, only eat unprocessed foods, etc).
To a point, yes all of these things are legitimately harmful to your health, but having this kind of mentality is also not great for your well-being. Really perhaps the highest health-yield lifestyle change they could make is to relax a bit more and try not to get stressed out as much through meditation/mindfulness
Not sure why, but SV in particular seems to attract a lot of people with this kind of mentality.