Earlier quoted context omitted.
Yeah, deflation is awful. Imagine our continuously increased production and efficiency resulting in goods becoming cheaper and the value of the working person’s dollar going farther. Horrifying.
There will not be many working people if the economy is deflationary. Please read a macro book so you at least understand what you're arguing against before spouting nonsense.
If the books say it's wrong, maybe it's time they get updated.
[1] https://www5.cao.go.jp/zenbun/wp-e/wp-je03/03-00102.html