You can tell him that what he said is out of date, and this word is actually an inappropriate word.

Because obsolescence is relative to the trend, and as for the trend, there is a famous saying that the trend can only wait but not catch up, so the trend is cyclical. There is no such thing as elimination. Now we know that many trends were popular in ancient times, so what was outdated in the past was popular at that time, and now we are pursuing it for the sake of trends? How to explain it?