Bitcoin is more international, perhaps? It's certainly easier for many to acquire than a mix of American stocks. Of course, the US is the largest part of the cryptocurrency market and if they thrash about in the pool, it should at least result in some ripples.
This simply isn't true. I live in Thailand. Most locals here don't have access to US stocks, or don't know that they do. Young people here have a Thai stock trading app (for the SET, which is the exchange) on their phone and another one for their domestic cryptocurrency exchange of choice. I think very few of them are buying AMZN or TSLA.
I'd bet fewer than 3% of the population here are buying US stocks.
