You're not using "at worst" correctly. What you describe is an "at best". Worse would be that CGP Grey deliberately picked a misleading title in order to optimize views, algorithm, etc.
This is, I think, the case. But I don't begrudge them too much, YouTube is cutthroat.
This is, I think, the case. But I don't begrudge them too much, YouTube is cutthroat.