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Have you found any good counterexamples? We let our three-year-old watch Daniel Tiger’s Neighborhood and I love it because it is exactly this: short (~10 minute) stories about situations and conflicts that a young child will encounter in everyday life. I’d be really interested to hear of other good shows & books like this. https://en.m.wikipedia.org/wiki/List_of_Daniel_Tiger%27s_Nei...
Stick with PBS Kids and Sesame Street and Mister Rogers reruns.
Also Sesame Street is very New York. The rest of the world doesn't live like this. I recommend local kids TV shows with real humons performing. Some short cartoons are fun, many of them are terrible, but the sum total of TV is dose dependent. Turning it off straight after their favorite show might result in a little argument but you'll be pleasantly surprised when 5 minutes later you catch them doing something (anything) else. Usually something creative, social, and developing fine motor skills, if not simply running around outside. And subsequently you'll find them turning it off themselves.