Well I'm certainly one of those 17-21 guys (and have been throughout my time on CW) and I don't see that an extra 20 years of following the game live count for a hell of a lot. Not nothing, but as I've said a good few times, there's not a lot you can't learn if you read, and watch (where available), and listen. Yes, sometimes to those guys in the "older" bracket.
My own ethic - and one I've always rather presumed everyone else subscribes to - is "listen(\read) where you don't know". Ie, if someone who knows something about something that you don't know anything about talks, listen.
Therefore I'd kinda assume that us 17-21-year-olds know what they're on about when they dispute an oldie. I don't think that because you've had more game-watching experience, that means you're a better judge.
And there's simply no disputing that plenty and plenty of so-called "expert" people make one hell of a lot of poor calls, and yet they're retained in prominent positions simply because of being very fine ex-players. IMO most of the best cricket journalists haven't been especially good players (you look at the Arlotts, Swantons, CMJs, Johnstons, Agnews, etc.) and you see a pattern. Yes, there are exceptions (Benaud, Laker) obviously, but IMO too much emphasis is placed by many people on being a good ex-player