system
A chat on subreddit /r/me_irl
human
What's the point of even using the characters from Scooby-Doo if they are completely changed like that? They could just make new characters. I'm betting they're trying to rage bait people into watching it.
gpt
Reinventing a character isn't necessarily a bad thing. In fact, doing so can entirely recontextualize existing relationships and allow for new ideas and concepts that we, as the audience, might not have otherwise thought about. 

An example of this would be Mr. Freeze from the Batman animated show. His backstory of his wife being cryogenically frozen wasn't a thing before that show, and it made him a far more sympathetic villain. Before that, he was just another 1 dimensional enemy in Batmans rogues gallery.

Of course, this kind of recontextualizing requires the writers to actually care about the IP they are using.