For another, even though Trump got elected by the US citizens, there are a lot of citizens who don't like him and don't listen to a word he says. They'd probably jump to buy bitcoin if he slammed it in one of his idiotic Twitter posts. The same holds true for the rest of the world, where I can't imagine he's all that popular.
I don't think this recent drop was driven by news or even rumor, because I haven't heard anything negative enough to warrant it. I think it was just due to some folks getting impatient with bitcoin's price and they ended up selling. It could have been those so-called whales with a lot of bitcoin to sell, or it could have been a bunch of different investors. Who knows? It's not something we're ever going to know, same as with the many other dramatic movements bitcoin has had over the years. But I'm fairly sure it wasn't because of Trump.