Many people who want to try out the game benefit greatly from trying the demo variant first. I don't know how that works with exact values.
Everyone knows how to play slots, poker, crashes etc. it just takes good skill and discipline so that it is more organized.
The bigger the bet, the bigger the value you will get.
IMHO, this is the exact point on the post you quoted above. Most of the gambler already know how the game works so if losing is what there main concern, they should not gamble at the first place. I seldom use the demo version unless there is a new game release but I never play a demo game that I already know because it is just a waste of time. The result is still the same even people try it first or not.

Very straight forward but reality wise, those words are precise.
Why waste your time if you already know how the game works, even you master the game by using the demos it's still different when
you are playing the actual game with your own money in front of you, there are emotions and there are lots of greed once you are playing
inside the house.
Still different from playing the demo with the real one, I also at the beginning played the demo with always a big win after I tried to have capital so it was very different when the tension occurred after several defeats, but there we will know that gambling is really interesting and challenging if you are strong against it. But if what the question is about quick profits then I think it's hard to answer and more evasive than in the beginning just wanting to gamble with big profits.
I think that is misguided.