Wow! So much has gone through your mind. The origin of the word sino in the Latin languages for Chinese had to do with the romanization of “chin”, as in Qin dynasty. That is a very long story; let’s discuss it another time.
You are right that ceramic does not lend its material nature to finer forms. However, that does not mean there are no fine tea ware made of ceramics. There is actually a very long tradition that is alive and prospering in very fine ceramic tea ware. I hope such topic could interest more readers so I can write more about it in tea guardian.
In terms of mass produced, readily available and very affordable fine tea ware, porcelain does have a clear advantage, which you have observed.
Culture and cultural behavior is a giant topic and everyone would surely have a lot of opinions nowadays. To me, what matters most in the context of this medium, is that we can all share what is good taste, good health and a better lifestyle by way of quality. I hope eventually that transcends languages, cultures, and races.
I hope you find tea wares that touch your heart and fit your hand for some enjoyable tea moments.
