> 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?
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].
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].
[0]: https://news.ycombinator.com/item?id=18734999