Eliezer hasn't argued for the unquestioned rightness of rapid, continual technological innovation. On the contrary, he's argued that scientists should bear some responsibility for the potentially dangerous fruits of their work, rather than handwaving it away with the presumption that the developments can't do any harm, or if they can, it's not their responsibility.

In fact, the primary purpose of the SIAI is to try and get a particular technological development right, because they are convinced that getting it wrong could fuck up everything worse than anything has ever been fucked up.