Comment by balanced2

It's not surprising at all because I guess as one would expect, schoolyard rules applies in a game, not company rules. Seniority is still going strong at school, perhaps since the age difference is low or because there is lower opportunity for merit-based respect.

At companies, basically everyone should be speaking polite Japanese regardless of seniority. Harassment has been a big deal and companies have gotten a lot stricter on it these past years, so at large corporations there will be far less of senior members talking down to low members as did happen before. One reason companies can change like this is at most, HR is a much stronger org than product, i.e. the ideal career path for a manager tends to be to move from product to HR, at least at the ones we wouldn't refer to as "tech companies".

SMBs will still feel quite old though since they don't have strong HR like the big companies. I don't know much about government but do have the impression that they would also still have these issues. But I think corporate Japan has gotten a lot better than you might be thinking.