I’ve seen a lot of people on here be teased for difficulty expressing themselves. Either people complain “you’re using big person words to describe mundane things” when they’re aiming for precision or “woah, we don’t need that damn wall of text” when they’re aiming for clarity. It’s like people just want to complain.
A if I know the vocabulary. B if I don’t.
Its all about the audience.
I’m definitely in support of A, regardless. I only know complex words from having seen them used correctly in the wild; how could anyone be expected to learn them otherwise?
The ability to find an approximate definition of a new word using context - and slowly whittle it down to the actual definition over subsequent encounters - is invaluable for gaining better language comprehension.