It must be miserable to be in your early 20s today. The prospect of high student debt, more competitive job environment, polarising of wealth, a housing bubble that perpetuates here in the UK. I'm only early 30s but I'm glad I was born when I was.
IMO You really can't underestimate the importance of that last one, the property bubble.
In the past young people could strive towards buying their own place, starting a family, climbing the ladder, but that's so far out of reach nowadays that many people can't even hope to play that game. One of the big drivers in many people's lives has been pulled out of reach.
It can all feel like a treadmill even if you're in a good job so I can see how young people who aren't working in a hot industry such as tech in a major city to feel this way.