“Such as the shooter was a professional gambler who made $5 million in 2015. Not possible.”
Right. Just like it’s impossible that the same guys show up at the final table of the World Series of Poker every year. Oh wait, they do.
We are talking about video poker here. Statistically impossible - the house gets 0.5 - 2% of all money over time at the video poker machines - and that is if you play it perfectly.