Looking at btc price charts in dollar and euro can give you a good feel for how much everyone who earns dollars or holds assets denominated in dollars lost of their purchasing power since Trump took office. If you didn't get a raise (or appreciacion) of 18% since then you are in the red.
Well, Trump is trying to devalue the dollar. If it was up to Trump, the dollar would be trading for half (against the EUR/GPB/etc.), to stimulate US exports.
But US is not an export economy. Last time exports exceeded imports was half a century ago. You may wish it was but it isn't and it won't be. So when you are devaluing your currency by 20% even if you improve your exports a little bit you are doing it at the cost of making your imports (which will still vastly dominate) about 20% worst deal for you. And all that to recover from the world a handful of dollars in exchange for actual labor and materials. Dollars which you can nearly freely print yourself.
Why are people talking about Trump wanting to devalue the dollar as it is something smart to do?
Yeah. He definitely wants that. He constantly complains about FED keeping interest rates too high.
But it's such a terrible idea. Dollar being worth half of EUR, which might easily happen way sooner than anyone expects (look at what happened to pound), means that Americans would have to work twice as much for anything they import because the world will adjust their dollar prices to reflect the dropping value of the dollar.