Parents have a chiyyuv to be mechaneich their children.
A. We might disagree on the definition of chinuch. I think it means to influence your kids to have a better relationship with Hashem and try harder to keep the torah. I think the most effective way of doing that is by example, and that telling kids, especially college age, is counter-productive.
B. When I say “Judaism is a one man religion”– which I did not coin- I mean that each of us only answers to G-d, and nobody can pater anyone else. Thus, it truly is an individual’s religion.
I do not mean to tread on the concept of arvus which adds obligation to each of us for the others. Regarding that though, the same is true as above that it should be driven by what works, and forcing doesn’t.