I was a teacher for 28 years and worked in four different large Hertfordshire secondary schools, with teachers from the full range of experience/entry routes/age background. That was a LOT of staff, as any area near London has a high staff turnover. I can only remember two NQTs who were anything other than lovely, keen, willing to learn and supportive of each other, all colleagues and the kids. Both acted like arrogant and entitled little madams and would have been unpopular in any working context.
So, IME, the very few who do act like this are likely to receive the cold shoulder, whilst the huge majority who are lovely will receive welcome, support and recognition for whatever they bring to the table in their schools.
Having said that, I sound like a victim-blamer, and one (experienced) colleague whom I personally despised was a psychopathic bully who liked nothing more than to have power and authority over trainee teachers on placement, NQTs and anybody else, therefore I do understand the fact that some NTQs subjected to someone like this probably do become very upset very quickly.
It's very important for SLT and Heads to recognise the few general bullies of the type I am referring to and ensure that they are told straight to treat NQTs supportively, but sadly this does not always happen.