It sounds like some psychologists could use a bit of assertiveness training:
Cognitive Daily is a bit alarmed: "Why would esteemed researchers find it worthwhile to make self-criticalstatements in front of their own colleagues? We're not talking hereabout sandbagging, where a speaker deliberately lowers expectations inorder to make his or her accomplishments appear more impressive. We'realso not talking about supplication or begging for pity. Nor were thesestatements disclaimers, where listeners were asked to disregard oroverlook a flaw."
I'm thinking about adopting the same approach here at Bodyhack, but with a passive-aggressive twist. Look for warnings like "This post was barely worth my time, let alone yours."