Earlier quoted context omitted.
They replace other ad network ads with their own ~ads~ crypto currency . They monetize the content of others and don't tell them. If you have a youtube channel, they will swap out ads and collect the ad revenue without telling the channel that they're doing so. I'm not particularly impressed with their business. In fact I'm pretty disgusted with it.
The majority of ad revenue goes to the site, not to Brave[1]. The user gets a cut for having to see the ad, and Brave gets a cut as well. But even if you're right, why is it unethical for me to install software on my own computer to render websites differently than the creator intended? For example, by removing ads? Or replacing ads with different ads? Or rendering all ads upside down? [1] https://brave.com/how-brave…
It's not unethical for you to run that program, but what is being argued is that Brave (the company) is acting unethically, for example by taking donations on behalf of other people without their consent[0].