Yes, I agree with that - it should be a user toggle instead of a "walled garden" automagically applied to everyone. Especially after it was determined that posts from the president are Presidential communications, which by default (legally) are public. That suggests you shouldn't have to log in to read
everything current and past public servants have posted.
The phone thing is a different issue - one that I've noticed on a lot of other sites. It's always under the guise of 2FA, even if you don't enable that. It's an obvious data grab.