Honestly I think everything should move to 20.
Alcohol purchase, consumption. Military conscription, draft, voluntary service Age of majority, marriageable age Voting with automatic voting registration Drug consumption including nicotine, caffeine, and cabinets Driving ( permits at a prior age with supervision )
We know people’s brains aren’t really formed enough even at 18 to consider people adults, this younger age is a hold over from even younger ages and doesn’t reflect reality.
People who are not fully developed shouldn’t be able to make decisions with the full weight of adulthood, to take any other position is barbaric.
It’s no longer true as of about two years ago no, but the measurement was always a bit skewed for Western audiences and glosses over increases in specific types of crimes ( categorically ) such as homicide bombings and domestic terrorism.