Most of the time when people say they have an unpopular opinion, it turns out it’s actually pretty popular.
Do you have some that’s really unpopular and most likely will get you downvoted?
Odd how our bodies reach adult height and brains adult size during puberty :-)
You have cherrypicked your sources. All of neurology points to very fact that brains develop very quickly ages 9-13 and then very slow change from that point on.
but that data doesn’t support your bigotry, so you ignore it.
Incidentally teen brains aged 13-15 perform best on several types of cognitive test.
again, data that bigots choose to ignore.