>If people choose en masse to change

This is nearly saying "If people stop murdering each other we won't have murder any more". Well, yea no shit, a tautology is a tautology. The question is how do you elicit social change in an environment that is actively fighting back against you doing so and has a massive amount more information than you do.

One of the key points here is you live outside the US so it's much more likely that your communities are far less digitally integrated and have a much different history of social change and dynamics. For example car culture presents an absolutely massive amount of friction to social change. It literally physically separates us at much larger distances than states that do not have car culture. There is also the fact the modern social media swept over the US first drawing in most of the population long before we recognized the dangers of it. Government agencies and businesses moved a healthy amount of their communications to things like social media platforms. The network effects are powerful.

The next thing I'd like you to do is get on social media where all these people you want to change are and tell them to get off.... oooh, your account was banned. These companies are organisms that will fight back against what your trying. You forget the tobacco companies fought in the US for 30+ years inventing entirely new methods of propaganda before we developed laws to protect the rest of us against smoke in public.

You are not talking about a choice. You are talking about a war that is actively being fought.