Here's how you know that there is a bubble in crypto, when you go to a party and everyone is takling about how much money they are making in cryptocurrencies, then sell all of your coins and go on vacation for a few months. Just like the stock market bubble when everyone was making so much money in stocks, then it crashed and they all lost their money. Or the housing bubble when strippers and plumbers had 3 houses each and were making sooo much money, when this happens there is no one left to buy. Nobody I know
has any idea about crypto, except that they heard about bitcoin. This market is currently valued at 68 Billion dollars worldwide, by comparison the stock markets worldwide total 70 Trillion dollars. If crypto rises to even 1% of stocks it would be hundreds of billions of dollars, this market has a lot of room to run over the next few years.