DOCUDESK  The first build of deskUNPDF for Mac 2.0 was released with a bug in the finder extension which our team immediately resolved. By popular demand, an improved universal installer package has also been available for some time. The installer package only defaults to install the finder extension, simply selecting custom during the process exposes the option to not install this. This reviewer must be commenting on an old build. I would encourage them to download and try a current build/installer.  
(Version 2.0)