It's like the opposite of how Disney has been doing live-action remakes of their classic animated movies: Warner Bros. have been doing animated remakes of their classic live-action movies (or, more accurately, older movies they own), and shoe-horning Tom and Jerry into them, because . . . why not? Seriously, these movies are almost shot-for-shot animated remakes, but with Tom and Jerry just thrown in there.
As for Scooby-Doo, they keep making one new Scooby-Doo series after another, with middling reaction.