I watched the last severance episode.
A manager (an 80’s looking, strong and tall black man so you identify him) is told during a performance review he “uses too many big words”.
To me, while this character can appear pretentious, he is simply an articulate man, like somebody who was taught at Oxford or Princeton. It’s simply how he was raised, it’s not his “fault”.
I would feel attacked is somebody told me that for trying to use an appropriate vocabulary to describe or explain something, like being posh was something to be ridiculed.
If a coworker told me that I’d use a more detailed description so he understands what I mean but otherwise keep using my regular vocabulary. If a manager told me that I’d start looking for a new job, as it’d signal he feels entitled to micromanage me and a job doesn’t have to be stressful.
Am I too thin skinned?
Real answer: if you’re communicating, you want to be understood at some level. Knowing the audience changes the dynamic to fulfill that goal. If you use big words and your audience is 5 year olds, you likely won’t be understood.
If someone gave me this advice, my first reaction wouldn’t be “You’re attacking me!” It would, “Hey, thanks for the advice. Can you unpack it further for me?” In work, I’ve done well by having a growth oriented mindset. There absolutely are bad faith actors, but listening to the advice of others has helped me grow.