The founder's of binance has been bullish on cryptocurrencies for quite some time now and I think that is what other should do.
I don't think that's a valid reason to become bullish. Binance CEO has an exchange to operate within an industry that thrives on boom cycles in order to generate volume and attract new users. Even if the days of crypto are coming to an end he will tell you that crypto will grow 1000x in the forthcoming years.
I believe that bitcoin is going to go 1000x in three to four years to come.
Bitcoin at $6500 x 1000 = $6,500,000 per coin. By the time that ever happens, $1 will have $0.001 purchasing power in today's world, which translates to $65,000 per coin.
Bitcoin's x1000 times are over, heck, we may not even see x100 anymore. I don't even see Ethereum do a x100 from where it is right now. The real party starts when the crypto market falls apart and only the main currencies manage to survive, and that time will come eventually.