Trump is still an influential person and has a significant influence on decision making in the country, so his statements can be taken seriously for players in the market. While most of these statements are just plain chat to keep people in tune and make themselves known
His statements and his perspectives are unstable. Unstable because he planned to do something, like manipulations. He is a businessman, right? His family run lots of business stuffs, who knows why he do this. I don't believe Trump does really hate bitcoin and crypto like he repeatedly tweeted.