Some truth in it, no doubt.
But are there no gifted children interested in sports? ("no football at weekends")
My db was (I believe) gifted but he was also the table tennis champion at school and obsessive about his violin playing.
And whether there are tired looks and tears surely depends on how much the parents enjoy intellectual discussions with their offspring? If the parents are academics, they might actually feel more comfortable around a child with whom they can have a decent discussion about evolution or the phonetic development of European languages. My dad, a very loving and involved parent, was much better at phonetic development than nursery rhymes.
It took me some time to adjust to ds ("But why doesn't he get it? I told this story to my undergraduates this morning and they got it so why doesn't he? I always used to come home and talk to his sister about my work when she was 6- why doesn't he understand what I'm saying?"). Eventually I realised that it was his sister who was the odd one out.