Not at all. No more than I would have with my grand daughter wanting to play dress-up as a fireman. It's make-believe, a form of play, fantasy. I did it, you did it, we all did it. We all did it differently and with many different characters, but it did not translate into who we are any more than possibly to give us the ability to look at life from different viewpoints and to give us the gift of being able to empathisize with someone else who is living life from a different vantage point than ourselves.
I would be much more concerned about my child being taught to be yet another redneck who thinks the most important things in life are what kind of truck you drive and how fun quading is than learniing that the real rewards in life come from integrity and honest heartfelt emotions.
The older I get, the more I realize that the most important, gratifying moments I have had were those that I spent with family, and that those emotions and memories I still retain from grandparents and other family members long gone are infinitely more valuable than the fun I had on a snowmobile. I want to leave my descendants with the same gifts I was given, the abilities to imagine, bring an imagined idea to fruition, to empathize with others, and to appreciate that the other people in your life are what really make it special.
I want my grand daughter or son to dress up as whatever they imagine at that time, to understand what it means to be that person, to help them understand what they want out of life and help them learn how to get it. And I want them to get what they want out of life while still taking into account their family and the others around them rather than riding on the backs of others.