These same arguments can be applied to other activities, like driving a car. I do support treating teenagers with more agency than children, so while I don't support letting 5 years olds work in McDonalds, I honestly don't see a problem with 16 year olds doing it.

Yes, the risk is higher than for a 25 y.o., but as someone who started working at age 15 - there are also rewards in experience, money, and figuring your own shit out. Nothing taught me about life like working.