No they cannot. And I am not just speaking in abstract terms, in the 1960s and 1970s (and even before) many shows were made that had a moral core but did not moralize at the audience.

Shows like Star Trek, The Outer Limits, Twilight Zone, etc. which would question or discuss complex ideas without turning them into soap operas or basic dramas.

The only shows that I can think of like that now are Black Mirror or perhaps your odd HBO offering, but those are not shining examples, and often, even if they do discuss or engage with deeper concepts or ideas, it’s not handled in a way that allows for nuance. (Black Mirror is happy to be quite crass at moments, same with HBO and other “top-tier” shows.)