To answer, No.
I haven't learned more words in such a long time, I won't know some words but I can still say alot.
I learned the meaning of 'relevance' when I was six, and even then I was a nose-picking imbecile.
So you must have some kind of mental issues, or a head trauma dating back from your early life. You can stop projecting your incapability frustrations onto us, ok?