Expectations have shifted from text to images, while the use of "tiled" layouts also have become an issue. Tumblr made a difference It remains unclear to me whether Tumblr formats, though much better looking, as a rule, are as workable as more-linear text formats for text-rich content.
Most Tumblr content tends to consist of shorter text elements, with better use of images. That works fine for many purposes. I'm not so sure it works as well for content that is mostly narrative in scope, where search is helpful and when it might be useful to know, quickly, what other users have consumed.