Completely agree, Indigo. Any theory taken to its extreme is extreme.

Children benefit from realistic, warm, supportive feedback. Gifted children, in particular, have good radar for manipulative, false, over-the-top praise. They know when they are being praised for work they did without effort, and many recoil if they are repeatedly told they are smart.

But gifted kids, like any others, deserve appropriate, meaningful supportive praise. There is nothing wrong, IMO, to enthusiastically saying "Good job!" when we really mean it and when our child has worked hard to accomplish something. Saying something lukewarm like, "I notice the interesting colors you chose for that project - they really stood out" can be an additional comment, but without the passion and enthusiasm, it just rings hollow. And our kids know that.