Just watched the video, I don't initially agree with his take completely but do totally respect the viewpoint and think a payment split to the creator whenever someone summarizes the video makes sense.
Yes we do offer the option to summarize content without creator buy-in, although it seems a bit different since we're also augmenting the content with questions etc. which should drive users to watch the video even more as opposed to skip it and just read the summary.
But you're right it's not perfect. If we ever have creators who don't want their stuff on our site we'd totally respect their wishes, but that hasn't been the case right now so this seems like the best thing to do.