ErebosGR I would rather support Google's search monopoly than their browser monopoly. Even if Google has a 99% search marketshare, you are still free to use another search engine. If Google has a 99% browser marketshare, you are not free to use other browsers, because other browsers won't be able to properly display web pages. Google will also put pressure on other browser to add their proprietary "standards", see: Widevine.
Changing the search engine is also the choice of the users. They don't have to be using Google if they consider Google unethical. But most ("normie") users will want to have Google as the default (e.g. most people actually using Edge on a daily basis change their search engine to Google).
Let's go through the browsers that don't use Google as their default search engine:
- Edge: uses Bing, which is not any better than Google, is Chromium-based, and as I said browser monopoly is worse than search monopoly
- Brave: just very recently started using their own search engine 👍️ , Chromium-based 👎️
- LibreWolf: I don't have anything against LibreWolf, but it's basically just Firefox with different defaults and it wouldn't be able to exist without Firefox. Regardless, if your argument is that Firefox has Google as the default, feel free to point them at LibreWolf instead.