Interesting observations. But for me, (been in Japan many times over the last 5 years), I didn't notice any of the items you mentioned.

Seemed similar to NY/SF speed in Tokyo, Osaka, and Yokohama.

To me, there is less or no small talk- definitely in places like Lawson and 7/11, but even department stores, with local or foreigner customers.

I noticed things go slower in Kyoto and other small towns, but no slower than small towns anywhere else in the world.