For me making money is difficult and I am always serious when trading, because like you said money is related to trading. So I don't want the money I used to trade to be wasted, if I have a trading loss then at least there is a lesson I can learn. From the very beginning I got to know crypto trading, I don't think it's a game, because trading isn't really a game. Only rich people who have excess money consider trading as a game, but the number of rich people who think like that is also few to my knowledge. Because usually rich people also want to be even richer, then he will also take trading seriously.
Rich people definitely do not see it as a game, that is how they become rich people. Sure Elon Musk could be, after all he has money in doge and that is a memecoin so you can consider it as a funny think he is doing that doesn't make any sense. However at the end of the day almost no rich person is like that, very very rarely (or if they inherited wealth).
Rich people take care of their money like crazy, they utilize every single bit of it, they try to get debt constantly to constantly be in debt but growing, it doesn't matter if you have 1 million dollars new debt if you are making 10-20 thousand dollars more money every month, you are going to cover that very easily, and even get more debt before you pay that one off. This is why I honestly believe that rich people take care of their money so well that they think this is more serious than death, since they do allow some death in their business when it profits them (look at mining death all around the world).