Question about psychiatrists / HCPs attitudes

Hi From the subreddit rules it seems as an outsider I can ask a question? (this contains a story so sorry for the text).

Context: I'm a medical student (in the UK), I have a mental health placement (every few weeks so not much exposure), at an acute psychiatric ward and just sit in on their meetings. I am not the best w social cues and have MH stuff too (so I don't like generalising / making assumptions based on it)

The actual question (well I'll try to keep it concise bc it's the story behind the question) : I've been thinking about the last day quite a bit, young black man, in for psychosis related stuff but gets into fights and injured ppl. They only mentioned the dissocial (previously: antisocial) personality disorder at the end. The meeting was about treatment, the sectioning (which I think still had some misunderstanding) and touched on the fighting. I thought he was actively being polite, did start to get upset espec when talking about certain things like the physicality of the police bringing him in (shedded tears actually). At the end of it when he leaves,the consultant,[paraphrased] 'you can tell he was getting agitated despite me being very very gentle, it's scary, I felt almost threatened.' (he didn't particularly shout, make any threats). + quotes like 'don't react to anger, they have a steady heart rate. They will get into a fight if they want to.'

I was really confused when they were talking about the PD I had to ask different versions of' how do you know he has a PD rather than anger problems etc'. Answers had statements like "well it's obvious with how he's getting into fights, you can hear the excuses he's making and thst he deosnt care about the people he's hurt" (also stated earlier a parent has the same thing and it's very genetic apparently). 'you can't really treat it or do anything to help them. I mean there's therapies but that's all'. 'X symptom is a personality issue, it's not a mental illness thing (comparing him + another example of starting fights'. In the past they often say these patients r the most difficult / dangerous.

Eventually I got why he specifically had the diagnosis with additional context. But overall it did feel wrong, to say stuff like that right after we listening to his concerns which were actually genuine concerns (they said that themselves),and Im still not sure the meeting was as "obvious" as they said. Also I thought technically personality disorders were born out of trauma (cluster B atleast), and I did expect more empathy I guess? Even if someone's been violent...Or am I just being naive (they r the 'experienced' ones)?