Well, personal responsibility is one of the dumbest things you can cite to a global problem.
Even dumber is annoying and inconveniencing random bystanders that have literally no way to influence the problem, like these protesters are doing to the travelers here.
Nonetheless, there is no way to avert the coming climate catastrophy without forcing almost everyone to change their behavior.
Wherever that has any chance of happening is a different story altogether.
That completely depends on what qualifies as meaningful. From a rational point of view, every impactful change came by regulation, which is a proxy for force. After all, what's going to happen when you break this regulation?
That doesn't mean that regulation would solve this particular crisis though. The best you can achieve with national regulation is pollution and that's just not gonna stop the coming climate disaster.
And you're mistaken wrt what I labeled dumb: I specifically phrased it in the context of actions, not people.
Even dumber is annoying and inconveniencing random bystanders that have literally no way to influence the problem, like these protesters are doing to the travelers here. Nonetheless, there is no way to avert the coming climate catastrophy without forcing almost everyone to change their behavior.
Wherever that has any chance of happening is a different story altogether.