I generally agree with your post, but I think there is a critical difference between your argument and that of the blog post. Of course teams are more productive with technologies they know, but that isn't necessarily an arbitrarily-defined "boring" technology.
To pick on one specific example in the post: Node.js is popular enough that there are lots of teams and engineers that are most comfortable and productive working with it. For these teams, choosing Node certainly wouldn't cost an innovation token, while deciding to build some service in Python, Ruby or PHP (if we take at face value that this is more "boring") may end up being more costly.