A thousand paper cuts. For one, if I click on any of the text, anywhere, it takes me out of context to somewhere else. Another: It can use up to ~20% of my screen space to show content I care about. Most of the rest goes to menus and trending nonsense.
About 15% of the page is available for the actual content. The rest is distracting clutter (eg. the share bar thing repeated over and over again after every sentence almost) or just void.
You have to scroll like crazy to read a very small amount of text
The text overall is extremely long and skinny, like a receipt, thats a highly suboptimal aspect ratio.
Comments are formatted exactly the same as the article, the article doesnt seem to end properly just morphs directly into comments.
Single sentences floating alone in a sea of crap is not a good way to read.