My point is that this same setting aside of irrelevant (to the technical aspects) differences should apply to use of software in addition to development of software.
That's a choice you are free to make. Other people can and will make different choices. Many people never shared that principle, and instead happily exercised freedom of association to not support or spend time around awful people.
Projects are not some magic boundary in which everything outside is left outside. You can't dump piles of money into hurting your colleagues and expect them to see that as a neutral choice.
Also, you don't have to benefit Brendan Eich by using Brave. Turn off the crypto and AFAICT Brave gets no money from you.
Not that I actually recommend Brave: I have no opinions on it. I'm just tired and worried by the attitude of judging software by the non-technical opinions of who wrote it.