I played Just Cause 2 for the first time when I was 15. Not that much younger than the recommended age, but still. I screwed around for a few minutes in the PS2 GTA games when I was about 12.
I played plenty of T-rated games before I was 13. Smash Melee and Brawl, the first two TMNT games on GameCube, and some others.
I do think there is a problem with kids under 10 playing M-rated games (Call of Duty, GTA). I wouldn't want it to happen if I kids, but it's up to each kid's parents. Most kids around 13 can probably handle M-rated games, and almost all probably can around 15-16 years old.
Lifetime Sales Predictions
Switch: 144 million (was 73, then 96, then 113 million, then 125 million)
PS5: 105 million Xbox Series S/X: 60 million
PS4: 120 mil (was 100 then 130 million, then 122 million) Xbox One: 51 mil (was 50 then 55 mil)
3DS: 75.5 mil (was 73, then 77 million)
"Let go your earthly tether, enter the void, empty and become wind." - Guru Laghima