Did you read the article? The author specifically mentions that he doesn't normally use Adobe Acrobat: The worst part is, Acrobat isn’t even the best free PDF

Did you read the article? The author specifically mentions that he doesn't normally use Adobe Acrobat: The worst part is, Acrobat isn’t even the best free PDF reader. Next time I will go with my usual default. With "usual default" linking to Foxit. Plus, you know, Adobe Air has Linux support. So it can install unwanted-but-necessary-to-view-some-site-or-run-an-app crap there too.