If you dont know someone classifies something as an insult, you might use it on accident.

Well, now you know.

What I am trying to avoid is

• I explain why the statement is an insult
• You think "that's not a very good reason" or "that's not my motivation".
• You decide that because you don't think the reason is very good, you can keep using it. Or you decide that because your motivation doesn't match the reason, you can keep using it.

I cannot deduce anything better than "Jiro (and maybe culture he is coming from) is quite different from the people (cultures) I faced already".

If you think I'm the only person who sees such things as insulting, and that the cultures you have already faced do not, you haven't been paying attention.