Honestly, this is win-win and I applaud Brave for taking on this engineering task.
- Users who are concerned about AMP can use Brave to bypass Google's infrastructure
- Users for whom AMP is a benefit can continue to use it
- Everybody wins
- Users who are concerned about AMP can use Brave to bypass Google's infrastructure
- Users for whom AMP is a benefit can continue to use it
- Everybody wins
Your thought experiment is equivalent to "What happens when Google no longer indexes the open web," and I think the answer is "Bing takes Google's place."