There’s also the point that judges’ votes on The Masked Singer aren’t game-changers the way that judges’ votes are on America’s Got Talent, so it’s not really necessary for The Masked Singer to keep an even number of judges, and there is already space for that fifth chair.
Of course, Ken Jeong is hilarious on The Masked Singer, so double the humor wouldn’t be a bad thing, even if that could mean double the guesses that aren’t always on the money.