tl;dr [politeness] makes for better UX
I think creating a brand new tag is probably unnecessary, as we already have a few that are more or less viable, and it might confuse people who used them in the past.
I suggest to examine what we have:
etiquette: the customary code of polite behaviour in society or among members of a particular profession or group.
I went ahead and did it: there's now only the spoken tag. I don't think this is remotely controversial. Off the top of my head, I created the excerpt
For questions about spoken Chinese (aka "oral Chinese" or "verbal Chinese"); consider also the [pronunciation] tag.
But please edit this if you can improve it or think of a better one.
There are only 9 questions, so let's just look at them all:
The "original" proverb of "Craftsman, know your tools" Not an etymology question. Actually, doesn't even suit an origin tag, since it's not asking about origins.
Thank You : 谢谢 vs 感谢 vs 跪谢 vs 多谢 It seems to suit the difference tag. The tags culture and origin seem to be ...