I dislike people who attempt to use Professional Jargon in order to make me feel inadequate.
About 25 years ago I was invited to become a member of a steering group for a new local scheme being considered by the National Health Service ; several other people from outside the NHS also took part and generally we all worked well together and made good progress. It was obvious from the start, however, that a few of the professionals did not want the outsiders to participate in the discussions; they used various strategies to keep us excluded but their weapon of choice was Jargon (with added acronyms.)
I have also been assaulted by Jargon when talking to accountants, lawyers, builders, car mechanics, vets and those terrifying ladies at the beauty counters in department stores. It’s not that I mind them using technical terms related to their professions, I do that myself, it’s the way that they use them I find objectionable.
I am currently rewriting sections of my novel having completed my own rigorous first edit; I had made a brief reference to the use of professional jargon by one of the male characters but I am expanding on it now to build sympathy for his wife’s character in the first chapter. This is proving harder than I expected because I do not know enough about his working environment so it’s back to research mode again.