Does the average include people who don't speak English? If about 4% of the world's population are native speakers and the number of words known tails off after

Does the average include people who don't speak English? If about 4% of the world's population are native speakers and the number of words known tails off after that I can imagine it could almost be approximately true. And maybe we are counting babies in English majority countries as native speakers but they haven't learned all their 20k words yet. Of course GP's point is still invalid in that case.