The important difference is the inflation rate could differ from its current value. Money 200 months left is unlikely to be worth exactly 10x as much as money with 20 months left. That difference may not be meaningful on its own but could have interesting knock on effects depending on how money enters the system.

I tend to agree but one difference is that inflation isn’t directly imposed on all goods at the same time. Businesses need to decide to change the price. Currency with a devaluation mechanism makes everything “more expensive” at the same time. This means that while there is general upward pressure on all goods, not all things change price at the same time. I’m not sure which is better, but it’s a difference.