I guess you're not familar with streaming culture, nor you live in an Asian country. Bragging on how much you spend on games and streaming the process is a thing. There was a Taiwan streamer who spent about 100k in hours on stream.

Of course it can be all staged. But the culture is there, and it's not that hard to imagine some people who has more money than they can spend in a lifetime doing this just to show that they can outspend the streamers.