I also think the networks or some organization realized they’re just 30 min toy commercials and added guidelinesTo answer the question directly:
Cartoons back in the 80s were merely 30 min toy commercials with great voice acting. That's sole reason why the cartoons back then like Transformers and GI Joe and others never had a over lasting story line and most episodes were self contained stories. There wasnt a thing called episode arc or continuity. It was just this: look we got the new Rodimus Prime toy, make sure he is featured in this episode fighting our new Galvatron toy. K? Thanks!
And with that said, since you think they suck, how come these properties STILL make a ton of money?!? Transformers along with GI Joe wi turn 30 next year. 30 years of them. Eat a dikk if you don't like 80s cartoons