Um... there really aren't any extremely strong arguments for majoritarianism. That position confuses conclusions with evidence.

Just as there really aren't any good reasons to abandon the scientific methodology just because you've declared 'Bayesianism' to diverge from it. Given that the scientific methodology has been extremely successful and is extraordinarily widely adopted among people who count, if we accept your contention that Bayesian thinking diverges from its requirements, shouldn't that cause us to be suspicious of Bayesianism?