Counterpoint, my parents didn’t shelter me from shit and my life went off the rails at 12.
(And the proper way to do "less long" is to slowly loosen up over time.)
I'm sure a study can follow kids or look in records, but that takes serious time, so I can understand looking at oneself and everyone you know and coming to a conclusion that way. Do you know if such a study had been done and the results or conclusions are publicly available somewhere?
Sounds like you got the first but not the second, which must have been tough. Hope you're doing better now.