Originally Posted by Navmode

So playing music at a reasonable volume makes a captain unprofessional? Seriously, get out of here. It takes literally 5 minutes to get an airplane ready if you don't have a can full of MEL's to look up. Just because you may be new and can't wrap your mind around things doesn't mean everyone else is on your level.

Pulling out their phone when taxiing ON TO THE RUNWAY is a whole different thing, though.