Of course, bitcoin is not a bubble because the price of bitcoin is formed by the presence of buyers and sellers, which ultimately results in prices. Bitcoin prices can rise or fall quickly and the value is very large, unlike conventional currencies that rise and fall are not too drastic. Therefore, economists say the price of bitcoin is like a bubble, which can suddenly break and become worthless. Because bitcoin will only have 21 million units, after that is achieved whether the price will increase or it will become worthless, time will answer
Now, almost everybody realizes that it is not a bubble. A bubble is something that is growing to the huge sizes and then bursts. As we realize, BTC price can go up and down but Bitcoin will never burst.