This is pretty normal. DS has been under the care of a variety of Consultants since 1995. A lot of the letters he is copied into start with 'lovely/personable/friendly young man.' Which he is. He isn't a pain in the arse. Sometimes I wish he would be more assertive but it just isn't in his nature. He's fine. Two bouts of cancer and had the all clear thankfully.
Although one of the first letters we received after DS had been discharged from hospital when he was 8, copied to his GP, caused my now MIL to have a silly hissy fit after we let her read it. It said that DS was the child of 'unrelated parents'. She thought they were judging us because we weren't married at the time.
We had to explain to her that it meant that DH and I weren't actually biologically related apart from being married, so there were no genetic or familial conditions, where we might both have had genetic issues, that we might have shared with him which could have led to his illness.
We did feed this back to the consultant who had written the letter at our next appointment and he totally got how that phrase could be misinterpreted. In subsequent letters we were copied into the phraseology was changed to say that DS's 'parents were not biologically related.' However, I have no idea if this was done only for us or whether it was done for all other parents in the same situation.
I think many GPs and Consultants learn the shorthand they use in letters from those teaching them and don't always understand the impact of their words. Perhaps until we tell them. But I have not yet met one who was not prepared to listen where improvement could have been made.
But I can't believe for a moment that your consultant would have meant anything other than it was a pleasure to meet you. I have met so many Consultants since 1985. All have been absolutely lovely and not one has ever been anything less than honest.