Come on, if someone were to cherry-pick wrongness from your history, mine, or anyone else's, it would be doozies all around. Therefore this crosses into incivility, which isn't allowed here. Not to mention it defeats good conversation, which is the point of these threads.
I understand the differences, however, the term was being used to describe EC2. In another example, I saw Amazon CEO Jeff Bezos in an interview refer to "grid computing" as a synonym for EC2 when describing it to a naive audience. Indeed the AMA authors comment about "setting the world on fire" was responding to the first announcement of EC2, not a general discussion of grid computing. He chose to use that term, rightly or wrongly, because like Bezos he saw it as synonymous with EC2.