Exactly. It's seems to be a weakness to be happy, positive and approving.
It makes me chuckle when I read reviews from evidently miserable and disappointed people who after eating out write: 'We couldn't fault the food'........or a camp site: 'We couldn't fault the facilities'.
There's my moan. But on the positive side I enjoy the schadenfreude from an awareness of how many unhappy whingers there are in this world.