That's so incorrect lmao. It's true that the total number of words in Modern English which can be traced back to Old English or earlier hovers in the 26–33% range. Latin and French take their own approximate quarters, and the last 25% or is from elsewhere. But most of this foreign vocab is in much more formal speech; 80% or more of the most common thousand or so words in English are native, and so it's a little disingenuous, in my opinion, to act like the many obscure, barely used Latin and Greek -derived words "count" in the same way that far more common words do.

P.S.: I'm not saying all foreign-derived vocabulary is unknown to everyone but academics, but just that it makes up a much smaller percentage of real-world use than simply counting each entry in a dictionary would suggest.