The Activity Monitor is hardly even the fastest way to kill a process in macOS. Usually when I'm working on something that goes haywire needs killing, I already know the process name and a simple `killall example` can be typed out faster than he can ⌘-space his way into the Activity Monitor and navigate that GUI. I don't think that proves anything profound though, just that his example was weak.
I went into this video agreeing with the stated premise (and still do), but this presentation was a bit underwhelming.