I think that the term 'Hothousing' is used to frighten parents. Intelligent parents - as a group - tend to enjoy doing activities that help develop intelligence. Intelligent children - usually - are very gratifying when you interact with them in ways that promote development of intelligent. But many of us Gifties were told from an early age that if we wanted to do those activities, or - heaven forbid, learn in school, that it was 'our fault, our problem.' So when we finally have children of our own, and want to just have 'our kind of fun' with them, we are always looking over our shoulder, to see who is judging us or calling us names like helicopter or hothousers.
If you are worried about your child burning out, look into information about
Unschooling - Wikipedia, http://webcache.googleusercontent.com/search?q=cache:WZcasSoFuNoJ:en.wikipedia.org/wiki/Unschooling+unschooling+wiki&cd=1&hl=en&ct=clnk&gl=us
