Edited the center paragraph about the reasons for this trope fading. There's no justification for what was listed, it was unnecessarily U.S.-centered (despite most of the world's porn being Made In America), and in this case "moral brigade" is actually the law.

Some of the visual novels listed have only as much sex as most print novels published for the last 50 years. So where do you draw the line for this trope? Because if they qualify for 'Porn With Plot', then there are ludicrous numbers of texts that belong in the literature section.

Wouldn't porn with plot be a better name?

Do go off of efsf, why not Balkanize it further, into Plot with Porn and Porn with Plot, depending on the main "draw"?