system
A chat on subreddit /r/NoStupidQuestions
human
My tinfoil hat theory is some young idiot with no talent wrote a shitty cartoon up and it was too late in the process to change anything so the producers said "this show is absolutely terrible you need to use Scooby Doo so that people will actually watch this pile of shit".

Producers probably knew it would bomb and wanted to salvage a small audience by slapping an existing IP onto it
gpt
Except Scooby-Doo is not even a character in the show.