I don't mind other parents calling their kids stupid. I don't do it to my son, but if others do it to theirs, it's just a bit less competition later in life for my boy ;)

If you believe all kids are created equal, barring a few outliers, then there has to be some method of creating the stupids. Inevitably, that's going to involve stupid parents, and maybe inept teachers too.

I see it as a way of distributing wealth more meritocratically. If every parent was perfect, the children of rich people would hang on to family wealth. If many parents are rubbish, the wealth gets spread around a bit better in the following generation.

Of course, this is compounded by the raising of children by maids from the poorest countries on earth, who often are illiterate in the parents' language. Parental abrogation goes hand-in-hand with the delegation of care to a non-family member.

And I've seen this in Western families too, who wouldn't dream in their home counties of ditching their parental responsibilities. Ho hum.