I broadly agree with the article OP. I'm a late millenial (born 1994) so have been hit with the £9k per year university tuition fees as well, which has been a lovely extra bonus to the whole shitshow.
Throughout the entirety of my schooling I was taught about the damage we do to the environment and one teacher in particular used to tell us with glee that "In 20 years time you'll all be walking around in gas masks because the world will be uninhabitable." I've wrestled with the ethics of having a baby as a consequence ever since I was a kid myself, but ultimately have decided to try. But...turns out my DH and I aren't the most fertile couple in the world either (and there's been studies showing that infertility has increased for both men and women over the past couple of generations - seemingly also related to damage we've done to the environment).
On top of that, my DH and I couldn't even bring ourselves to thinking about having a baby earlier due to issues such as the job market, high rent costs relative to income (even though we were flat sharing), and student debt. It's only since we emigrated that it became an option for us.
Raising a deposit in the UK if you live in the South or in a city such as Edinburgh is really difficult without getting help from family. Certain jobs are clustered around places where the living costs are higher - even with a 1 hour commute the rent can be eating up a healthy portion of your income.
People like to assume we're all the same Insta hyper-consumerists, but the reality is that the majority of us probably have spent a large portion of our 20s in mould-infested, dodgy apartments, spending at least 25% of our pre-tax income on rent. Gadgets are relatively cheap compared to that, can be inherited/bought second hand for a reasonable price, and provide a respite from what seems like an otherwise pretty depressing predicament.
I have absolutely no hope of there being an NHS, pensions, or adequate social care by the time I hit retirement. It does get grating to hear older generations try and offer 'helpful advice' when their own situations seemed much less bleak. It's completely irritating for them to fixate on the few luxuries we do enjoy, whilst also overlooking all the challenges we have that they did not.