No.
Those people were killed by choosing to/not taking safe use protocols when taking such substances. Alexander Shulgin created them for scientific reasons, they were to be used within limited circles for research into receptor activity and as possible therapeutic tools for psychiatric conditions. They got leaked from the lab (well the synthesis methods were anyway) and were mass produced. Alexander Shulgin I believe, never intended for this to happen. I believe his conscience should be completely clear on this front. I also believe all of Shulgin's work was for the greater good, and this is the unintended consequences as a result of a chain of occurrences which were ultimately out of his hands.
Its like saying that the scientists who discovered nuclear fission/fusion are responsible for the Hiroshima/Nagasaki deaths, which whilst ultimately if these things were never discovered, these nuclear bombings would not have occurred (though is possible something equally as unpleasant may well have occurred at the same time/place, say a biological/chemical attack), it is a hell of a stretch to hold them responsible.
I really don't understand how the media can possibly be allowed to get away with this crap. Demonising one of the greatest scientists in the world because of what is ultimately the end result of a long chain of events outside of his control. The media pisses me off no end - they really do need reigning in sometimes.
EDITED TO ADD: I thought the poster above was joking about the PIHKAL being a sick acronym - sadly he was right. What a joke of an article. Perhaps not surprising comments are closed, when such an inflammatory piece is written like that, I guess the comments went mental... ...and the fu**ing Daily Mail couldn't deal with the torrent of negative comments decrying it. Like anything, yes ecstasy can be dangerous, but then so can anything. I fu**ing despair of out media, I really do.