Given the current rate of Bitcoin, today making investments is quite profitable and practically Trump's statements contributed to this. I have the impression that this statement was made on purpose. Donald Trump is a very smart businessman and he did not have to wait for rash statements.
The President is a businessman and real property investor, its pretty sure he knew how stock market works. I can only presume he has BTC investment as well but just don't worry about price as he knows it going to go up no matter how hard the fuds will be. It would be so much better if he just express support to BTC though. It would have reached up to 14k by now.