I know one popular author who doesn't care: Brandon Sanderson. In addition he makes it possible to buy DRM free ebooks from his website.

In his words: “My experience has been that readers want to support things they like … But if they are at a point in their lives where they can’t, then it’s better to let them read the stories they want … and let them support artists when they’re capable of it. So I am a big fan of giving away books for free.”

Source: https://www.jotdown.es/2016/12/brandon-sanderson-i-want-to-s...