You've missed the point: users should get privacy by default and make choices to preserve their privacy, not have to dodge service requests (like getting another email address) to keep their privacy. The point isn't technical, it's ethical.

Services you should handle yourself on your own computer (like RSS feed reading) can be done for you but when they're done for you they become "Service as a Software Substitute" or "SaaSS" (see https://www.gnu.org/philosophy/who-does-that-server-really-s... for more on that).

A SaaSS RSS feed reader grants others power over what you're allowed to read, when you're allowed to read it, and that choice also empowers others to track you in your reading. If you don't value your privacy you'll lose it and then you'll likely come to regret losing it after it's too late and you've given trackers enough information to predict your habits.