It's because we've come so far down the slippery slope, I almost wouldn't expect anyone under 30 to recognize the top of it, as represented in The Twilight Zone. Especially considering that the public (or, at least, broadcasters' perception of public wants and tastes) kept the hippie stuff on the down low in the late 50s and early 60s. But yeah, it's harder to notice than in, say, the Nornam Lear fare of the 70s, or even Bewitched, or the various shows that normalized divorce.
It's because we've come so far down the slippery slope, I almost wouldn't expect anyone under 30 to recognize the top of it, as represented in The Twilight Zone. Especially considering that the public (or, at least, broadcasters' perception of public wants and tastes) kept the hippie stuff on the down low in the late 50s and early 60s. But yeah, it's harder to notice than in, say, the Nornam Lear fare of the 70s, or even Bewitched, or the various shows that normalized divorce.