zahavasdad,
if you DONT you are not a Ben-Torah and should be ostracized for being differnt
You made that up. Nobody ever said that.
So why when a Kehilla gets together to make community standards and one rov decides the standards are too leninent and tells people not to eat from the Kehilla hasghcha, He is considered a Tzadik
You’ve got your facts wrong. He doesn’t say not to eat from the Vaad, he advises his kehilla members to only eat from the Vaad establishments which uphold his standards. He is their posek, not the Vaad.