The one that I find a bit irritating is when politicians say 'look' before they answer questions. It sounds so 'teacherish' and condescending. 'Now you look here, you dimwits - I will tell you how it is . . .' They all seem to do it - it's not confined to one party, or even one personality type.
As regards sportspeople and so on - I agree with RosiesMaw. Politicians and representatives of 'causes' etc get media training so they come across well. The ability to sound articulate in front of cameras is not expected to come naturally.
Programme makers are aware of this, and will often interview managers in an industrial dispute in book-lined offices, giving them plenty of notice, and then stick a microphone under the nose of a worker who is getting into his car to go home and tell his family he's just been told his job is on the line. It stands to reason that one will seem measured and articulate and the other emotional and angry. Very few people can switch off their feelings and paint on a neutral face and tone of voice if they are upset. Except for psychopaths, maybe
. That applies to stressful situations of all types, including sport.
Also, often sportspeople are asked about things they don't want to share. They don't necessarily want their views on 'issues' to be known, or some of them do, but don't know as much about them as they think.
We are anonymous on here, and if not I'm sure we wouldn't be as open as we are, or come across as well as we do. It's easy to be articulate when we can type instead of speak, read through before clicking 'post' and consider an opinion before choosing to get involved.
If someone had doorstepped me and asked about my views on the poor communication skills of random people on TV, I'd have, like, um'd and err'd with the best of them, yeah.