All you can do is watch to see whether this is in fact going on with an individual athlete. When that message gets through and youngsters apply it in their lives generally and not only in sports, I think that is healthy. If you mean parents putting too much pressure on kids, while that goes on some, I personally don't see it as a major issue. Most parents and coaches keep things in perspective really well as far as I can tell. Traditionally girls' sports have been more focused on promoting grace and dignity and have centered on the experience of playing the game and personal relationships rather than the final score and championships.
Sports reflects what is going on in the society generally.
These days, there is a unisex ideal, the idea that boys and girls ought to do the same things in the same ways, including sports. Perhaps there is an economic factor involved. It could be that to the extent that men and women work in the same ways, careers and so on, they will also play in the same ways. Whether that is a good or a bad thing depends on your values. That is a complicated matter, and I spend a lot of time with that in the book.