My reading journey mirrors yours. When I entered the professional workforce, I was consistently met with vacant stares when I’d use whatever words I thought perfectly fit whatever I was describing. I came to find that using “big” words like that (examples I can recall: superfluous, inimical, vacuous, cogent, avuncular) made people think I was trying to show I was better than them. I had to pare my verbal vocabulary back to the most basic form so I could do my actual job.