But you also can't base the promotion on social skills alone, which in many instances, is THE requirement for promotion in EMS.
I worked for a supervisor at an IFT job who couldn't figure out how to use the scheduling software, didn't know how to read or edit an excel spreadsheet, based his leadership on platitudes he read off of a motivation thought of the day calendar and presented himself like an utter buffoon when he had a conversation with anyone aside from the brand new EMTs who didn't know any better.
The IFT company sold the assets and existing contracts to AMR. The supe bragged about how he was vital to the operation and how AMR was grooming him for a management position. He was fired immediately after the transition.
Why? Because the owners of the old company liked him and the new people realized that he was 10 pounds of crap in a 5 pound bag.
Plain and simple, you need to be able to talk the talk AND walk the walk. If you're planning on moving into a supervisory role, learn all you can about the things you'll need to do, before you're expected to do it. If you don't know how to build a pivot table in excel, take a class at your local CC. If you're nervous speaking to a group of people, take a public speaking class so you don't look like a smacked *** when you're addressing your team. It's all about building your skill set in preparation for the job. Attempting to learn how to do an expected task on the day the project is due is not the way to inspire confidence.