Tell that to someone who lived in 1816.
Same story with my cello; its design was obsolete in the 18th century, but was a new design compared to the viola da gamba of the 15th century or mid-16th century bass violins.
Believe it or not, "technology" doesn't have to require circuits. Any novel invention is tech. While people point to the savagery and mobility of the Huns, Genghis Khan's success was really due to his adaptation and advancement of technology. He would capture, learn how to use, and improve upon the weapons of places he conquered. The English longbow was critical for English successes in Europe. Sextants helped navigate the oceans. And so on.
But the key element here is, unlike Khan's siege engines, the Longbow, the laufmaschine and sextants, the key aspect of OP's question is do you still use it? And yeah, I still use my cello. I perform on it, record with it... And after I'm gone, someone else will, just as someone else played it before I was even born.
I'm a chapter in its story. Which is really fuckin' cool.