It's understandable to worry about Bitcoin's future with President Trump becoming president.
Why?
I don't remember him saying anything that should worry bitcoin holders, on the contrary-he has been pro bitcoin/cryptocurrency in general. He was of course doing that just for the sake of votes and not because he actually supports bitcoin and everyuthing that it stands for so I see him as yet another useful idiot.
I do agree that he probably doesn't care for crypto in the slightest - but if he can make some good for it - why not.