So here is another definition of hot-housing:

If I do it, then it is 'helping the development of my kid', but if the other parent does it, then it is 'hot-housing'.

Unfortunately, I do believe that we are more often than not, in the position of the 'other parent' ...

I agree with Tammiane that it is probably due to the fact that GT children can often accomplish things that are out of the ordinary and people of ND kids are reluctant to believe that other's children are two-three sigma beyond average.

I asked my hubby and he told me that for him hot-housing starts when the child is showing sign of distress.