If I were to make the video again, I'd make two changes: 1) At 5:26,
I say "Black will have to capture." There is another possibility, as
some commenters have pointed out. Black can just make another move
instead of capturing white's dark squared bishop, IF white moves its
bishop to h6. If white captures black's bishop on the next move, black
can recapture it with its king. However, this is not part of the video.
It is a situation that could arise if white moves its bishop to h6.