I think this is a very interesting question. My thoughts:
Of course, there are people with mental health disorders. However, I do think that we have people claiming to have anxiety or mental health disorders, when they don't. It's a get out of jail free card, especially at work : "You can't make me do that, because I suffer with X"
Invisible illnesses - anyone can claim "I have it", and you can't disagree. My sister has a pal with ME. She doesn't work, doesn't do anything at home, like cooking or cleaning, literally nothing - her DH does it all. However, at the weekend she can cut up a dance floor until 3am.
Too much soft parenting - means a lack of resilience in people. At 16, I was working full time and paying board. If I had told my parents I didn't want to work, and my plan was to play video games all day, I would have been given a clip around the ear and a boot up the arse - no way would that fly. Same if I had refused school - would have been marched through the door.
People having children too late. We all know that under age 35 is optimum. Once you go over that, you have much more chance of having children who have certain disorders. Why is this never mentioned? And this goes for men too, as sperm deteriorates as the man gets older, yet we regularly see 50 year old men getting women pregnant.
Ultra processed foods - why are we feeding our children utter shite and then wondering why they aren't thriving? Same goes for people not eating well in pregnancy.
Violent video games - why are we letting little boys play video games, where they are shooting shit up and murdering people? Do we not see how this is going to fuel aggression and put violent ideas into little heads.
Social media - dreadful for young people, because everyone looks like they're doing better than you/having more fun/are thinner or prettier (filters).
Lack of jail terms for offenders. If you do the crime, do the time. No early release. For really bad crimes, lethal injection.
That was a bit of a ramble and I've gone hugely off topic!