I agree with this, now in my mid 60's I worked before and after school from the age of 12, again only doing paper rounds/shop work and babysitting.
I saw that earning and having my own money allowed a bit for saving and a bit for spending as my parents didn’t have a big income, I could buy things I not only needed but saved for, all be it for ages and eventually those I wanted.
My DH also had a weekend gardening job at 14....both my DC, now in their 30's had jobs slightly older than that.
We would go into a FT job thinking nothing of starting at the bottom and progressing, I didn't do college or uni, didn't earn a fortune, but what I received I did actually earn and appreciated that I'd earned it.
I worked during a slow period in the 80's where companies were laying off workers our company chose to do week on week off where all workers took turns and worked one week then another set of workers did the next, it kept everyone in a job...fortunately I still lived with my parents. We received our wage one week and £12 'dole money' the next which was deemed enough to live on, it was a struggle as I still paid bed and board but we were more than happy to be able to still have jobs, and pretty used to working towards what we needed instead of wanting everything now.
Not everyone is academically minded and we will always need shop staff/plumbers/painters/electricians and such but unless you've a parent/know someone to take you under their wing training around our area is like rocking horse shite.
I understand some jobs for school age children aren't so readily available now due to insurance in many cases, and dare I say some seeing their parents getting everything for nothing but I
also think pushing the older generation into staying in work isn’t freeing up those jobs for the younger generations to move into.