I love learning new words. It gets harder to find words you don't know when you're older and read enough, but it's always rad when you do.
I can't believe I even have to say this, but: Insisting on the reader developing basic literacy and vocabulary improvement skills is not, nor has ever been, ableism. Encountering a word you do not understand is not gatekeeping. It's an invitation for you to learn a new word. FFS.