Help me out here, Ex Buddhists.

[Angrboda]

At least the Buddha taught us:  Believe nothing, no matter who says it, not even if I say it, unless it stands to reason and fits with your common sense.

Well that much is good advice.  

I find that to be horrible advice. We're biased thinkers, all of us, and this just lets loose the monsters of the id: confirmation bias, dunning-kruger, bias blindspot, etc.. It's just the opposite of what the Kalam sutra which he quotes advises: it's following a teacher instead of realizing that ordinary common sense just plain doesn't work. Common sense is what people practice now, and see where it leads them?