Because flights have been so cheap and readily available, the genie is out of the bottle, and no amount of rhetoric is going to stop people wanting to fly.
So we need to re-direct our focus onto better, more sustainable fuel sources (which is the case for anything using power).
We have a lot of tech that can help us all move forwards into a more sustainable lifestyle, and we should encourage companies to see a commercial benefit to investing in further research towards sustainable travel.
I'm in my early 50s, I never went to university because I messed up my A levels. But even back in the 80s, it was expensive to go to university. OK, no tuition fees, but the grants for maintenance and cost of books, etc, were small and means tested. I know a couple of people from that time who ended up going straight into work because they/their families couldn't afford the costs of university. It wasn't something given on a plate.
And there are so many other things that we in the 80s didn't have compared to today.
OP,, it's swings and roundabouts. Yes, flying may be cut back, but you've got opportunities/lifestyles and so much more that we Gen X kids never had.