LMAO, at this “retcon” bullshit. People have been suspecting her of playing for the other team (or both) since LONG before Twitter was a thing. This is as much a “retcon” as if they revealed Shaggy gets high all the time.
Also Scooby Doo has a fuck ton of continuities. Who gives a shit if a new one mixes things up a bit? The Mystery Inc. series changed a LOT and it’s widely considered by fans to be the best series in the franchise. And for the “but they didn’t bring romance into it” angle, actually they did, quite a bit in fact. Hell, Zombie Island had some romance in it, again considered one of the best of the franchise.
Scooby Doo has gone through a ton of changes. I see nothing wrong with this, it’s par for the course for the franchise. And hey, I guarantee you this will at least have more creativity to it than the “let’s throw random celebrities in for the sake of it” era. Like, yes, the Harlem Globetrotters are cool, how the fuck do they fit with Scooby Doo though?