Japan does have a well known “customer is god” cultural background; whether or not tipping has anything to do with that is here or there, though it is the expectation that if someone does a job, it is expected not to be half assed.
One of the big differences between here in Japan and other parts of the world I’ve visited and lived in, is the near absence of service staff who actively make a point of looking like they hate their life and treat you like crap, though this is slowly changing here too.
This kind of reply is what makes me want to quit HN forever. There's always somebody out there smarter who knows better. Why bother to try and contribute anything?
