Wetherell was not involved with launching retweet, and didn't implement much (maybe any?) of the code in that Nov 2009 launch. He probably did write a version of the frontend for retweet at some point, and had done some backend code, but all of that was largely rewritten by launch day.
To be fair, he probably didn't claim that, but making his involvement out to be more than it was probably did well for the article.
To be fair, he probably didn't claim that, but making his involvement out to be more than it was probably did well for the article.