It's obvious to anyone with half a brain jstolfi has a deep understanding of Bitcoin, and he is making some valid points. (Plus I like his clear
un-emotional posts.. )

Deep understanding of Bitcoin? It was disproved few pages ago by knightdk. JorgeStolfi clearly has no elementary comprehension of the source code of Bitcoin.
Yet he continues to post trivialities like:
And, in that case, bitcoin is done for anyway: nothing will save it if malicious miners have a majority of the hashpower.
which was already stated in the original Satoshi's whitepaper. This isn't deep. This is as shallow as it gets.
CIYAM tends to think that JorgeStolfi is some sort of paid disinformation operative. From my personal experiences with peer-review I would venture to guess that he may be heavily medicated or have some sort of amnesia. Such people tend to have good recall of the recent facts and recently acquired knowledge but start to have problems with recall and application of facts and knowledge acquired years ago.