Maybe he's talking about renaming contexts in the sidebar of context mode on the main window?
However, I should have been more precise: if I have already selected a perspective name, then clicking on it and waiting allows me to edit it. If I have not selected that perspective, then I do have to click a second time.
That is exactly how selection from a list is supposed to behave in OS X. Try it in the Finder (or Path Finder), or in iTunes (e.g. the name of a song). If clicking on a list element that was not already selected took the user into edit mode, there would be a lot of accidental renaming going on!