This question is more of Psyche than theology, 12ers as a minority cling tightly to their identitiy which is associatted with Ali and his family.This leads to the common accusation that 12ers venerate Ali more than Muhammad ( saw) which is not true, while they do hold their imams in higher regard than other pROPHETS.By loudly proclaiming “Ya Ali” they assert their determination to remain a distinct community within muslims.