If google is dominant enough, everyone needs to follow. Or get left behind.

I think the main problem that remains is that all those chromium derivatives strengthen googles position as the de facto standard. It is not only about chromium, but also web developments outside of that browser, like DRM, SEO, AMP etc. Websites might adapt or tailor towards that browser or google created standards/tech. And thus, everyone (including Brave and all other, including firefox) needs to follow. Or get left behind.

If Brave, and all other chromium derivatives, don't agree with the direction chromium takes, can't they remove that code? Every deviation from chromium is going to cost resources, so they have to pick their fights. And if google/chromium is dominant enough, you will have to compromise on how much you can deviate. Brave needs to follow chromium or get incompatible.

Using Brave strengthens chromiums position as the de facto standard. And Google getting more dominant.