I'm an outlier because I LOVE exposition. I want to know what's going on in the comic! I'm very inquisitive, and it bothers me when the summary of a comic is "X does Y" without any other background. If a comic starts out really slow, without any exposition at all, I tend to get bored. I love worldbuilding; I want to know what kind of world this is, how it works, who populates it, and how the MC relates to it.
But then again, I think this is an unusual taste, compared to many people who like the cinematic, slow-burn approach to exposition. Since HoT's inception, I always imagined it like a cartoon TV show, which perhaps is obvious once I say it. Exposition happens as necessary to the chapter; in the page you linked (thanks!) we're getting important info on a new group of characters that could not have been skipped over. I also have my self-insert narrator C do the "C Says" extra-chapter exposition pages, so the audience gets some extra info without burdening it in the chapter script.
As for my approach to exposition, Hierogriff linked a great and pertinent example. I like to exposition over cool images and illustrations. A lot of times the images/illustrations are not literal to the comic (in that page, Cyrus doesn't actually go to space) and are not things the characters themselves are seeing (see ch1 pg14). However it looks cool for the audience, and also, I had a lot of fun drawing space.
Another tool for exposition I like to use is a character telling something while performing another action. I'm working on a page right now where one character, off to the side, is explaining her feelings about the situation she's in, over a montage of characters doing another action, removed from the exposition.
For a comic style like mine, which is more greatly condensed than others, an economy of exposition is important. As long as your exposition is not egregious, too long-winded and/or too anecdotal, it should fly with the audience.