Canada

If we end up in a 10 year deflationary period then that would be catastrophic I was moreso referencing a short term “return to 2019 numbers” type of deflation that I believe could be a good thing for people

Are you saying that a 2%-ish deflation rate sustained for ten years would be catastrophic, but a return to 2019 prices would be a good thing? On what sort of time period would that be beneficial?

Because the accumulated inflation since 2019 is somewhere around 20%, and if we correct it over ten years that would approximately match the scenario you deemed as catastrophic earlier.

Since the FED is focused on a 2% inflation hedge and we’ve raised interest rates so much, they would just lower them again to prevent a repeat of Japan

Well, that is what Japan tried to do and it wasn't enough. The problem is that in the real world you can't lower interest rates beyond a certain point, because as interest rates approach zero or even negative values (ZIRP), banks find it very difficult to make a profit from lending, which leads them to bankrupcy, which in turn slows the economy down, which is the opposite of what you are trying to achieve. Not to mention that on the way to ZIRP private debt balloons and when interest rates eventually revert to their mean the debt burden becomes unbearable, which leads to a recession.

In other words, macroeconomics is a tricky unstable system and simplistic takes have poor outcomes.