What you call "marketable and thus monetizable", I (and I'm not a designer, though I do a little of my own print and web design) call "human-friendly." It's not that people don't want to read, it's that we have learned over the span of human history how to present information in a more accessible way, culminating for now--though surely not terminating--in high-signal, short forms: lectures, web content, stuff like that. I'm not saying that's an unequivocal good; as this post might show, I like to write, and I have more than occasionally been told that I like to "lecture" because I have and share thoughts that take more than a few sentences to get to their conclusion. But it's not purely for marketing, it's because this is how most people think. It's not a new thing, it's not Those Kids And Their Short Attention Spans, it's why a catchy slogan has always done better than a reasoned argument. You can speak to them in your language, and get mad that they Just Don't Understand, or you can speak to them in theirs.
There's a reason the absolute best work on the NSA and spying was John Oliver asking Edward Snowden if the NSA can see pictures of his penis. That one interview did more than literally every electron perturbed by the EFF and other groups to get this into people's heads.
That's more than marketing. That's human communication. And dismissing it is fashionable in nerdy circles and absolutely tragic at the same time. We need to get out of our own heads and understand other people, dammit. It's the only way we can really do good.