It was invented by Western psychologists upon discovering that the results of their experiments on Western psychology students did not, after all, generalise to results that were applicable to all humans.
If you’re hanging round in circles that use it as a derogatory term, you’re hanging round in the wrong circles.
It’s actually more common in the rest of the world than Europe and the US. It’s kind of crazy to say it’s WEIRD to expect nuclear families, when it’s the west that is the least likely (still the majority have nuclear families).