Like any other form of income. If he would have tried to monetize Wordle a large chunk of the users would have jumped ship for some free clone (which will take a couple of days to whip up).

I'd say this was a smart move, and if he makes a good, leveraged play with that million it will either change his life on the spot or a few years down the line (but then in a bigger way). Such windfalls don't happen twice in a lifetime, but when they do it is an instant opportunity to level up.