Haven't read this, but based on the summary - yes, it sounds super accurate.
Anyway, it's super easy to write stuff off as "elitist" or "snobby" or too difficult, but it's worth taking the time to learn about them and understand them. Sure, depending on where you come from and your level of education, it might be a challenge, and definitely impossible to do in ALL instances. Still, you might realize a love of modern art or dance or experimental literature or Shakespeare. Don't deprive yourself of that.
And if you're coming from the other perspective, it's easy to write stuff off as dumb or worthless or mindless trash - if it's soooo easy to understand, it must be beneath you. I spent a few years in academia, in a literature department, and this was the perspective that many students and professors had. But creating art that is accessible or endearing or has mass appeal is important too, as is understanding exactly how it is done, and appreciating that. Plus, like, god forbid we just ENJOY something because it's enjoyable, and not necessarily because it makes you look smart and has cultural cache.
It's just about being open to all kinds of things, "low culture" or "high culture."