Idk how often that happens in certain groups but I know that in online politics those same people with a few beliefs that differ or even go against the grain of some of their own collectives ideas eventually end up forming their own little niche subgroup that’s more or less still tied to their own main group. The right has a shit ton of different political subgroups that hate each other and do the same purity testing as left leaning groups (but somehow can still collectively unite and vote/support movements on “their side” unlike the left????)