I use stop losses on every trade.
I don't think of it as gambling. I prefer to think of it as risk control.
Take the Vegas situation. It's the customer vs the casino. Both are playing the same game. On any one spin of the wheel, pull of the handle or deal of the hand, you don't know who will win.
Do you think the casino is gambling?
The casino will ban you if they see you Martingale with a large stack.
Perhaps that is what is being posited?