What are you supposed to do with a million Es? You can’t spell anything without consonants, can you? The odds of getting all E tiles have to be less than the odds of being eaten by a shark. At least this guy can say that he beat the odds, even though it doesn’t help him spell anything.
What’s the next move? He can’t do anything unless someone lays down constant tiles. Even then, the best he can hope for is spelling two-letter words, like He or Be or Me. This would have been the perfect moment to rage-quit out of this game.