You've probably heard people say, "The longer we play, the better our chances of winning jackpot." But in reality, it’s often the opposite and such a mindset can be a trap. Each spin is a independent event, and every second doesn't increase your chances of winning in the next spin.
That statement is misleading, and what you are saying about it is false. It's misleading because it doesn't take into account the money you have to put in from your own pocket to win the jackpot. And what you say is false because the statement refers to a series, not an individual event. If you play a series of 1,000 spins, you have a much better chance than if you play a single spin.
Obviously, the events (spins) are independent, but the more spins, the greater the likelihood of winning the jackpot. It's simple math.
The fact that chasing the jackpot is generally unprofitable (with an infinite number of bets and an infinite jackpot win, you'll still end up losing money on average) is a separate issue. Your problem is that you've confused two different issues.
He confuses the probability of a single spin with the fact that when you play slots, you don't play just one spin, so you have to take the series into account.