This happens when the person trades with altcoins and does not pay attention to the price in relation to bitcoin. In the case of BTC - USD you need to choose whether you want to increase USD or even increase BTC, after deciding what you want to increase you can now develop your own strategy
I did commit this mistake in the past where i do focus on USD value instead on satoshi value.
Bitcoin-related news channels always put altcoin prices in dollars, and are always very happy every time altcoin prices go up in dollars, but they forget that in relation to bitcoin they are falling in a scary way