Scooby Doo has a really, really bleak society. Many of the criminals possess incredible skills that would readily land them high paying jobs in our world. Some villains try to scare others by using what would be incredible practical/special effects, but are somehow doing this for insurance fraud instead of having every producer in Hollywood and every music artist knock on their door to get them to make special effects for their stuff.

Another one that I remember is when a villain made a super advanced robot that is 100% autonomous and capable of things like operating a vehicle and navigating on their own (this is much better than a regular self-driving car) and... are able to be tricked and confused, since Shaggy confuses by them but pretending to be a gym teacher (or something) and making them do jumping Jacks and the robot is just baffled.

A robot with that ability is just so far beyond what is possible now and that episode aired in the 70s. Can you imagine if someone could make a robot like that? On their own I a cave with a box of scraps? He could change the world and make an unholy amount of money.

Instead his creator was just using him for what was basically petty theft.

Scooby Doo is far darker than you think with that in mind.