True. Just look at cartoons in the late 60s (Herculoids, Fantastic Four, Superman, Space Ghost, Jonny Quest). That was an amazing time if you were a young boy getting up to spend saturday morning watching cartoons.
Agreed; the action and danger was a full part of the scripts, so we were not left wanting for a superheroic experience, only to end up with something better suited for Sesame Street.
But the censors got up in arms and kidvid got basically neutered for the next 13 to 15 years. I was a dedicated watcher for all those years, but so much of it was basically warmed-over crap designed to make parents' groups feel safer (and especially mothers who wouldn't know what is entertainment to a young boy if their life depended on it).
That was the 1970s/80s--a near total destruction of the adventure series for networks. Compare the Hanna-Barbera Fantastic Four (1967) to the Depatie-Freleng version from 1978--the former captured some of the period comics--including action/violence, the other was just more of the "bad guy, you must stop" kind of paternalistic nonsense.