While it's undeniable [...] that social pressures often prevent people from arriving at true beliefs

Social pressures also often encourage people to arrive at true beliefs. I'm not at all convinced that the net effect of social pressures runs counter to truth. There are some specific subject matters ("the afterlife" e.g.) that pose a problem, but then there are other specific areas (mathematics, for poor thinkers) where social pressures push people into correct beliefs they would otherwise lack.