There's always a time and place for everything. As a parent, you are the primary caregivers and teachers of your children, up until such time that they can decide and understand better for themselves. But until then, parents should be there to monitor and explain to their children regarding what's allowed or not, including what's more important or not to focus on while they're growing up.
Yes.
Parents are the first teachers of the kids and for everything that they do. The kids' attitude and things that they do will reflect the teachings of their parents.
So if something good is being shown by the kids, it only means one thing and vice versa.