This is the answer. It's not like there's some conspiracy to stop production on kids show, it's just that they weren't a viable option.

As a kid in the 90s, there used to be tons of programing blocks for kids on every channel but over time, people just stopped watching. CBS kids used to have some classics but then Fox News, Kids WB, and ABC's One Sautrday Morning got all the quality shows and no one cared about Muppet Babies. Same thing with after school blocks; Disney Afternoon was huge but then Kids WB and Fox Kids got Animanics, Batman, X-Men and whatnots and no one cared about Bonkers or Snoochums and Meat.

My niece is 14 so I've gotten to see the current generation's connection with cartoons and they don't need a 6:30am airing of Beast Wars or a 4pm airing of Mucha Lucha when they watch something on Netflix, YouTube, or OnDemand. They don't need saturday morning blocks because they have their favorite episodes of the Loud House or Steven Universe available instantly.

Let's be real, if we had HBO Max with every episode of Adventure Time, we wouldn't still choose to watch it on broadcast tv and sit through commercials. Cartoon Network and other kid-focused channels are struggling because kids just aren't watching broadcast tv so if they aren't watching, why would other channels like ABC, Fox, etc continue to waste money?

The creators of the show went on to make another show called "Kevin (Probably) Saves the World" that's similiar to Reaper but features Jason Ritter tasked with helping people with directions from angels. In one episode, Kevin has to get a Chuck E Cheese-style animatronic for someone and meets up with Sock and Sam who're hiding out from the Devil.

Shame that the creators of the show can never land a series. Everything they do gets one or two seasons then cancelled with cliffhangers.