Placing emphasis on things is commonplace. Sometimes it's in the form of a literary device such as hyperbole and sometimes it's done typographically. You should

Placing emphasis on things is commonplace. Sometimes it's in the form of a literary device such as hyperbole and sometimes it's done typographically. You shouldn't read it as being "random" but accept it as part of the works. The author clearly intended to draw attention to those sentences and given it is his or her article, it should be accepted as part of the article and the overall message attempting to be conveyed.