Huge difference here IMHO is that the west has been using this line for 40-50 years. At some point it's not "appeasement" and just "diplomacy between countries with differing values are complicated."
Put another way: if you want to call it appeasement, fine, it has worked for a long time. On the other hand, "peace via war" has a terrible track record.
Put another way: if you want to call it appeasement, fine, it has worked for a long time. On the other hand, "peace via war" has a terrible track record.