Things like this are commonplace because of course we don't want to show our weaknesses and of course losing at gambling can be considered a weakness especially in this case we are also aware that this is more of a joke between gamblers when our closest friends know we lose a laughing stock so that it better displays victory as a form of self-defense.
But indeed, as you said, this will also have a slightly bigger impact because regardless of anything, something like this will actually provide stimulation to gamblers to have an appetite in pursuing victory and that will not look good.
Actually it's not a problem of weakness, but they just don't want to be judged stupid and don't have the luck to win, so they don't want others to know about their defeat.
But by showing off a gambler's victory, he can get into serious trouble, for example, they will feel arrogant so that they are hated by others and by showing a big win, it can trigger some people to hack to steal all the winnings.
It's better in gambling to just quietly get a big win and look stupid without having much insight, but actually we already have experience and countless wins from gambling.
To be honest, I have never seen (in my surroundings) when someone gets a big win, other gamblers intend to hack or steal (although I don't know what is going on in their minds), instead they mostly want to know which games we won and what gambling sites. that we play, they usually follow and hope that they will also feel the same luck. I also have never seen any of them get so cocky about their big win other than the jokes we usually make. Maybe this comes back to the perception of each.
No one can hack you now if you know the basics of online security,you just show your winnings in a photo or video without showing the real data of your wallet and always we should use 2 factor authentication whenever possible which increases our security in a substantial amount of 99%.Now even if we hit that big win once in a while I have learned the hard way that we lose more in the long haul,I have lost several hundred dollars with slot machines in this week and I have been not playing for some days and I don't want to come back for the time being.
I agree with you, that it will not be easy to hack, especially if we know the basics of what security we must do to secure every asset we have. It comes back to us actually, if we are not careful enough then not only in gambling but in real life it will be easier for us to lose what we have.