These can detract from the subject and can all be avoided with practise and serious thinking about why you are taking the photograph. Interests are as different as people, some people are not interested in naval aircraft if the wings are folded. Others want to crop rotor blades from helicopters otherwise the fuselages will appear too small. Many people want to know when and where photos are taken. Of course, there are those who photograph everything that flys, but those are a rare breed.
Some people only collect a single type of aircraft.
There are hundreds of people that trade slides of aircraft. Some are registration or serial hunters, they seek at least one slide of each aircraft of interest. Others want only one from each user. Some follow only certain users whether Pan Am, the Bulgarian Air Force or every aircraft operated by their favourite Tiger squadron. A truly good portrait shot should have some extra space all around the subject.