If many gamblers turned off the sound while playing slots, the impact of this and gambling on them would be reduced by many percent.
And if we remove the colorful pictures, which essentially have nothing to do with the chances of winning, then the attractiveness of the slot will fall even more.
I want to say that the interface greatly influences the gambler's perception of gambling and this should not be underestimated. But the most important thing is that the gambler evaluates only the chances of his victory. So why do we all give the casino the opportunity to influence us?