I sort of see what you are saying. When I started blazing in highschool you had to earn your right as a stoner almost. When you first started smoking you got shitty deals, found shitty weed, went to sketchy people. Then like as you smoked you met more people, got better deals on danker weed, and after a couple years were pretty set with your hookups and such. Now kids just get their med card and have complete access to anything they want, all kinds of the dankest of the dank, hash, keif, hash oil, OG Buddha's Earwax, whatever. So they just never really had to work their way up I guess.
I don't really care though, and I know for example one guy who started smoking years after me but within a few months was growing some of the best weed I've seen. As far as I'm concerned, the more people enjoying the sweet sweet sheeba the better. Calm the earth down a bit.
You will also notice its the same for anything. Its like when people don't drink till they turn 21 but then can't handle their shit and get all ridiculous at parties and embarrass themselves.