Stocks give like 20-30% returns in an year but bitcoin and other crypto coins can give this much return in just one day. At such, do you think that increasing popularity of bitcoin has reduced interest of people in stocks.
People will choose what they like the best. It could be Bitcoin, it could be stock. And in some situations, both. Because Bitcoin investment is not for everyone. The same goes for stock. Not everyone will understand it and not all can become successful. So it will be a personal choice if one wants to join Bitcoin or the stock market.
So those who were less interested in stock could come to join Bitcoin, also vice versa for the stock market. It's not always about big profits and all. Bitcoin does not always provides profits on some days and at that higher level of profits. As every investment carries risks, bitcoin, and stock is no exception. Both markets are volatile and the risk is there. As long as people are making profits out of something, they won't lose interest in it. And those who are smart will keep both of them as an option. They can choose both or choose the one that best suite them.