People sometimes say they are living vicariously through their children.   If parents push a child to do something only the parents are interested in, it could be a red flag. 

There are those skills to learn that are good for the child even if the child isn't interested.  Perhaps its swimming or learning to iron one's clothes.   But if its something like a sport or skill that the child is not interested in, which the child doesn't need to learn, for example baseball or football or ballet or piano, parents should think twice about making the child pursue it.

 Another related parental behavior is making the child always be busy with or more seasonal sports or some kind of lessons.  It's possible to cause the child to be overwhelmed and just go through the motions of doing one or more of these things with little or no passion for it.

It's important for children to have regular down time so that they can have a chance to be kids and play, and potentially discover real passions.  Passions drive motivation and bring joy to individuals.  Its a very important aspect of life.  It might make sense to not book up children's lives so much that they have no time to look for and try out possible passions!