i didn't know that the two meters thing is based on the droplets model. in any case i understand where youre coming from but public health does not come about by scolding individual people into changing their behaviour. fundamentally the advice from all the world governments and health agencies is that masking indoors is now largely unnecessary. to say that people are "completely selfish" for following that advice is absurd. the average person is not in the position to research the epidemiology of mask wearing and the mechanics of viral particle spread in order to make decisions on whether or not to wear a mask. and even in an ideal society it is untenable to mandate 100% masking indoors for 100% of the population. i think its more effective to focus on systemic changes and regulations that encourage health, like mandating effective ventilation for buildings and providing a robust health system that can prevent illness in the first place.

moreover i think its deeply concerning to think that "everyone in society is completely selfish and unwilling to take small steps to protect others". i think thats literal doomer shit. theres no way thats a healthy way to view the world. its incredibly ungenerous and cynical. if that's the case then why try and improve things at all? it makes me wonder if this is really about public health at all or if this is an easy shortcut for you to crudely write people off as uncaring. are you immunocompromised? do you know immunocompromised people? do immunocompromised people uniformly believe that people who dont mask up are completely selfish and unwilling to protect other people? its easier to cope with a bleak world if youre confident that everybody in it is irredeemable. if there is value in people then it means you have to change things, and that's harder than retreating into doomer shit.

also "the only thing you can do is source control" is obviously untrue. if that were the true there would be no point in wearing a mask when everybody else is going unmasked