It is very natural thing for human beings to complain and moan about the price of anything, they just don't remember that the price two years ago was significantly lower than it is right now.
Not all but only those who have lost their money due to fall in the price. They are waiting for big bump in the price and I think it will not happen again because now the price is increasing naturally and according to the market cap. People are putting their money again in bitcoin and the price is growing. Soon old investors will recover their deficits.