> That's my point. It's a lot more complicated

It's not so complicated that you assume you need to run out at this very moment to find the nearest elevator just to prove a point. That's moronic.

> There are escalators where it's too narrow to pass

So you see what everybody else is doing and do that. Presumably, if it's that narrow, everybody's just standing in the centre.

> The same goes for escalators that are so long that nobody's walking up them to accelerate their progress

The fact the staircase is so long is exactly why people would be walking up an escalator, to save the most time.

> or when nobody is around

Then it clearly doesn't matter.

> or when it's so crowded nobody's able to pass anyway

If everybody's on one side, it's not too crowded.

> it doesn't apply in places where people aren't going to be in a big hurry

Alright, that's fine for where you are familiar. It won't take long at all to notice that's not the case in Japan, there are enough elevators all around the place.

> Manners are really complicated

If you're completely unobservant yet somehow think you need to be on edge at all times, which seems contradictory, I'm sure it is.

Or if you think that they're inflexible edicts without nuance. They're manners, not morals.