They probably wanted to air the final Bleach cour semi-close to streaming and didn't care about how much they'd need to sacrifice to do so. Viewership has been way up this year compared to last, so I doubt this is a sign they're sunsetting the block. Also, anyone claiming the block has never been this devoid of new content is just wrong. At the very least, there is A show of note, even if it isn't an acquisition. The months after Mashle season 1 ended and before Lazarus started, you couldn't even say that. It ain't good, but they've shown a willingness to sacrifice entire chunks of the year before, and in recent examples, it's been because they went on a shopping spree.