No problem! I know a lot of people love the PDF reader, it really is convenient, and I'm a big fan of avoiding adobe's reader whenever possible but after so many years of issues the file format is tainted to me. Too many exploitable features and having popular browsers include that functionality makes those readers an attractive target.

I don't think Mozilla has done a comparatively terrible job with it (they all end up with vulnerabilities, and it would take a lot to steal that crown from acrobat) but I do feel better downloading PDFs and using something a little less common to view them. I've bounced around between using Open/LibreOffice, Foxit (before they went bad), and even converting PDFs into saner formats prior to viewing, but these days I'm liking Sumatra for windows