Obviously, you know the kind of intelligent activist 21st century yoofs I'm actually talking about

I don't I'm afraid. Please enlighten me. One of the biggest secondary schools in North Yorkshire is about 500 yards from my front door and most of the pupils seem to be dropped off and picked up by their parents and seem to have an unhealthy pre-occupation with mobile devices. There may be the odd Greta Thunberg but judging by the general behaviour the "active conviction and call for immediate change" takes second place to home comforts. I'm not saying they are bad kids or that they don't care. I'm sure they care about the environment as much as the next person but I think that maybe you are overestimating their commitment rather than anyone underestimating anything. Maybe your wife can confirm that the generation in her care all walk to and from school and do not use mobile devices?

I also still don't know which "elelments of the left" give uncritical support to these "tools"