This isn't about pedantry, it's about not using a phrase incorrectly and through doing so giving misinformation. Pedantry might be pointing out that "foot pedal" is redundant - all pedals are foot-operated by definition. That wouldn't matter because the meaning is unaltered by the redundancy. However saying that Belgium (or the USA) is a nation state is simply incorrect.
This isn't about pedantry, it's about not using a phrase incorrectly and through doing so giving misinformation. Pedantry might be pointing out that "foot pedal" is redundant - all pedals are foot-operated by definition. That wouldn't matter because the meaning is unaltered by the redundancy. However saying that Belgium (or the USA) is a nation state is simply incorrect.