This is excellent, just what I'm looking for. I've used other comment disablers, which were also good, but they just had on-off switches, no option to show comments without toggling back and forth.

Would be even better if it also worked on community posts.

There are also situations where it doesn't work automatically and I have to refresh the page. Example: If I "show comments" on a video in a playlist, when it moves to the next video in the playlist the comments are shown there as well. Or if I "show comments" on a video and then click a link to another video (e.g. a link in the description), the comments are shown there as well.