This is significant because this is the first time in the history of copyright bots that they’ve ever had to remove a work from the bot’s registry. Given how rarely it happens, the code to do that probably won’t even be worth the cost of writing for another decade or two: some guy at YouTube will just add a manual exception for that video. (And that’s assuming the best of intention and action from the copy-vio-bot sellers which is unlikely, given their existing behavior.)