Listen to what I tell you and do it. If you do, three things can happen: One, it will work and you'll get credit. Two, it won't work and I'll get the blame. Three, you'll do it wrong and you'll be gone.
Television in the 1960s & 70s had just as much dross and the programmes were a lot more tediously patronising than they are now. Memory truncates occasional gems into a glittering skein of brilliance. More television, more channels means more good television and, of course, more bad. The same equation applies to publishing, film and, I expect, sumo wrestling.