[doall]

Reading your post, a question comes up to my mind. Just that it resembles and the origin comes from the same place, do we consider PDAs as same as the iPhone era smartphones?

The concept may look similar, but they are very different things in detail, and the latter became the defacto and created a new culture, which makes it important and I think it is enough to call it unique or original.

[contingencies]

All I will say to that is that, as programmers, we should learn to distinguish between historically attributable derivation (evidenced fact) and vague conceptual notions such as culture and even more derivative, fuzzy and subjective notions of the potential equality of instance thereof (opine). This is why I spoke in generalities and placed "Japanese culture" in quotes, because it is a vague and popular term without a meaningful and precise definition.