Even though I can't agree completely that trump is dictating the crypto market how ever there are some non market forces that play a role in making affecting how the market will move either up or down of which statements from president Donald trump will impact directly on the price of Bitcoin.
I don't think the right word here is "dictate". Trump is simply manipulating the market and we are falling for those manipulations. The first few weeks of Trump's emergence as the president of US saw lots of fluctuations in response to Trump's words and actions, It's somehow normal now though.
If bitcoiners will not react to news on the internet or what Trump says, there will be nothing Trump can do to influence the price of bitcoin. We are the ones making him feel like a dictator.