I think that's one point of the article: Instead of creating a game not set in the real world where for some arbitrary, unexplained reason there are huge blocks everywhere, developers create games ostensibly set in reality where those same blocks look like buildings. Except that you expect to be able to enter these buildings (like in reality), so when you can't that breaks your immersion.

So keep the blocks, but don't make them look like something that exists in reality, because then players will expect them to behave like the real thing.