bhe:
I think we need some clarification. I never said that disbelieving inMashiach or believing in corporeality is acceptable. I also never said that it is ok to rely on buried sources. My only point is that it doesn’t make sense (to me) that the definition of heresy can change over time. Therefore, if the Rambam is right then there were Rishonim (perhaps an amora) who were heretics, and if the Rambam was wrong then the people nowadays are not heretics.