I don’t know why people insist on trying to diss SpaceX anytime there’s space news… Anyway, last time they missed the Autonomous Drone Ship was years ago when they were first trying to land. So I’m not exactly sure what you are referring to.

Plus, with space missions there are usually many different mission objectives, and with this mission the main mission was to “demonstrate its highly precise navigation and landing system” which they determined to be a success. The extra credit mission would be if it landed properly and they were able to do more science with it.