I think the article isn't that plausible, or rather tries to construct something linked to historical strands.
I think it is probably more banal than that.
One is that many more young people go to universities, although in fact the majority of students are if not apolitical, not rabid. Other students are effectiely re-enacting the student life as novels and the main stream media have caricatured it.
The big difference is in fact how parents are now effectively acting as promoters of their children's radicalism. This is particularly true of the enviromental strand, Greta being a prime example where effectively her parents pimped her out, or at best thought to allow her to live her life as informed by her autism. The media just went wild. Their adoption of her then gave the false impression that is you protest you achieve change, not the reality that you are just fodder for the every hungry sensational valure free media. Packham is another example of this. ie the roman circus approach to politics. What the media is really hoping is that some cult figure will just go to far.
But this single minded loud proclamation of their virtue and that the media puts it on their front pages means young people aspire to be that front page. ie they are more motivated by a facile headline than actual change.
As opposed to lets say grungy hippies who went off to Wales to life off the country side but in fact through finding how hard that was actual developed various appliances etc., that are environmentally friendly. And are now ironically sucessful businesses.
The protesting is seen to be the end in itself. You are the hero/ine. In my borough the local pro Palestinian groups organised a cycle ride round the area and later published photos about how wonderful it had been, and many of them had cried.
I know may activists, some of whom I dont agree with, from cyclists, to environmentalists, to Pro Palestinian groups who are just embarrassed by what many campaigns have become.
But many parents of these primarily university educated over indulged offspring, just coo and take virtual friendly photos to share.
So not unlike the trans woo woo, where apparently parents bow down to the wisdom of 10 year olds, we now have desparately to please parents being the cheerleaders of what is little more than fashion trend that young people are desparate to be seen to be part off, in much the same way as they want to have been and seen to have been at various music festivals.
This fawning on the supposed wisdom of young people by parents seems to have now seeped into the attitude of grandparents. I laughed outloud when I heard this story. I bet these 2 women thought their grand children would think they are wonderful. https://www.lbc.co.uk/news/two-women-charged-criminal-damage-magna-carta-glass-smashed-just-stop-oil/
Its like being on facebook or X or instagram. its not the message but the number of likes, shares you get.
No need to bother with the boring, time consuming work of actually trying to work out new systems, ways of working, consumerism, political practice. Just through some process of osmosis revolutionary change will happen and you will get a millions shares on the internet.