Trump's tweets has not created a FUD but has increased BTC's price by a little. The news are calling it as the Trump Pump.

https://cointelegraph.com/news/trump-pump-bitcoin-price-buoyant-after-us-president-says-hes-not-a-fan

Also, I would like to say that predictions are not to be taken seriously. Predictions in crypto are just like guessing numbers.
The one who guesses it right is then praised by thousands.