Yes, his (Stolfi's) mostly courteous front can be very misleading concerning his credibility  - and likely causes people to give much more credit to him than he deserves.  Surely, sometimes he makes some decent points or brings up some interesting topics, but frequently, his points are skewed in a level of unrealism that any real supposed academic who is acting with honesty would give more validity to points that are contrary to his own agenda.

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I don't have a problem hearing various negative views or even sorting the various arguments etc; however, trolling by definition is a problem because it is distracting and aims to incite rather than to really engage in meaningful discussion.  There are ways to present counter evidence and make arguments against bitcoin without being disingenuous and without putting out false arguments and even misstating relevant facts.  Some of the trolls, including Stolfi has a pattern and tendency to mislead.... .. and frequently the bullshit should be pointed out for what it is, rather than accepted as if he is contributing to the dialogue in some kind of positive way.  Again, NOT every post of Stolfi can be characterized as such, because in fact he attempts to build his credibility by being a more sophisticated troll.. and when he does actually put out FUD, sometimes very genuine and intellectually honest people, including yourself, are mislead by some of his FUD spreading.