While I believe this is largely correct, it does not support your conclusion.

You are assuming that the participation would need to be to the benefit of the community to be worthwhile. That's not the case. The party which stands to benefit most is the teen themselves. They may not be able to meaningfully participate in the kinds of discussion examples you have listed, but they could try.

After all, not being an ignorant dumbass is a skill that must be learned, and one that (as evidenced by this thread) many adults never managed to learn for themselves.

No, but where are they gonna learn all those things? These concepts are transferred through social contacts, and they won't acquire them when they are isolated.

And learning about things is as much about saying what i think as it is about getting feedback to that thought process. It's not to say that people shouldn't try to get some basics about stuff before uttering crap, but if you want the younger generations to actually engage with social concepts, it does not help if they are excluded from the discussion.

That is completely ignorant of issues involving discrimination, clearly ageism is just the tip of the iceberg here - my gut tells me you are just as naive when it comes to gender or even race.

Everyone reading this, please just block this user as this is clearly a troll. No point wasting your mental capacity on this fud.