A bug report does not imply a user is angry or not. Software is shipped with known bugs which often go unfixed. And a lack of features can be just as critical o

A bug report does not imply a user is angry or not. Software is shipped with known bugs which often go unfixed. And a lack of features can be just as critical of an impediment for a user. So neither bug nor feature can fully describe the effect that an identified issue has on its overall priority. An angry phone call doesn't universally change the order of work for all companies. Some projects might rate this event more importantly than other projects. Most angry phone calls are a result of usability problems not strictly feature defects. So there's no direct correlation here between user product sentiment and backlog priorities, unless your company culture adds that correlation.