“Ok, so odu li mihas that even if you personally don’t care whether there is kiddush Hashem or chillul Hashem in the world, that a person who does not believe in the geulah is not practicing Judaism”
Well that is the whole topic that we are debating. I have no problem with saying that people who believe XYZ are heretics as long as you are consistent and say that people who believed XYZ in the past are also heretics.