[The benefits of mask wearing] sounds like anecdotes. Hydroxychloroquine hoopla ring a bell?
Yes, mask wearing is anecdotal in some respects, as is going to a mask-free wedding where nobody contracts the virus or when an autistic child drinking bleach snaps out of it. In none of these cases has there been a double-blind plecebo study or a large epidemological study over several years. However, there are some key differences.
Only "evidence suggests" that giving hydroychloroquine to a Covid-19 patient is bad idea. It might in fact cure some patients. However, it has been shown to have severe side affects even in patients for whom the drug was designed. "Evidence suggests", in a limited test of VA Covid-19 patients, that it kills as many as it cures. But such a limited study amounts to anecdotal evidence.
There is only "evidence to suggest" that drinking bleach doesn't cure autism or Covid-19 in since there have not been any studies of the matter. This is the argument of the proponents...no scientific "proof". On the other hand, bleach is known to be highly toxic in humans with no "evidence to suggest" it could be helpful. Injesting bleach might work in some cases if somebody cares to try it knowing the risk it might kill you. You are free to choose your poison, so to speak.
Any medical treatment balances efficacy with risk. There are known medical risks with taking hydroxychloroquine or drinking bleach. So a key difference is there is no medical risk in wearing a mask or social distancing. By your own experiece the only negative side affect is not enjoying a meal out or perhaps those parties had everybody been wearing masks.
So, why bother wearing one? What's the "evidence suggesting" it might help? If you come in contact with the virus "evidence suggests" that the severity of symptoms (or if one subsequently exhibits any symptoms at all) is a function of viral load--how many and how large the viral particles you injest. If an infected person's mask prevents any particles from being spewed in the air or the un-infected person's mask prevents any particles from being injested, "evidence suggests" that's a plus. Futher, "evidence suggests" social distancing allows for spewed virus particles to be dispersed, diluted if you will, before being injested by someone 6 feet away, thereby reducing viral load. The same idea prevails in the suggestion that it is better to gather outdoors than indoors. But that's based on how other viruses have acted, what is known about this one, and how the immune system functions. It amounts to scientific "common sense" rather than hard scienctific proof like the common sensical idea that drinking bleach is a bad idea.
It is possible that masks do nothing particularly meaningful in and of themselves since only "evidence suggests" they will. There has been no double-blind plecebo study of 30,000 people on the matter. And there never will be. We don't want the Josef Mengeles of the world practicing science and medicine. So if you're waiting for concrete proof you'll be waiting forever. Then you start sounding like the bleach drinkers. It is possible, however, two people face to face wearing masks are reminding each other to keep their distance and they won't be swapping spit in a hook-up frat party either, the kind that are now shutting down universities. So you got that much if the viral load theory is correct which only "evidence suggests" based on the behavior of other viruses, what is known so far about this one, and what is know about the immune system. Like not drinking bleach, it amounts to merely scientific "common sense", not concrete proof. Who knows, wearing a mask might have a placebo affect. We'll never know that either.
Are there cites for...parents being prosecuted for child abuse [for having autistic children drink bleach]?
I don't know. It's purported to be a diluted solution if that makes a difference. That exhausts my interest in exploring the matter. Feel free to explore it further on your own and report back.
Are there instances of parents being prosecuted for refusing to give their kids the measles vaccine? There are also jurisdictions and school districts that have dictated that a person cannot be required to where a mask. Has anybody been prosecuted or fired for requiring others under their authority to wear a mask? I don't know that either, but I'd be curious to know. If I had to guess, I don't think that's the case with the measles vaccine but I would not be surprised at all if sombody was arrested or fired in the other situation.