Is Charlie Brown, of all people, a purveyor of toxic positivity? That certainly wasn’t the case for decades of comic strips and (to a lesser extent) TV specials and feature films, where Charles M. Schulz’s iconic everykid lost every baseball game,

“I guess your generation would rather sit in front of the television than sit under the stars,” he tells Sally. “We have to protect these kinds of places because once they’re gone, they’re gone forev...