I honestly think reason 3 just shouldn't be included, it changes nothing. It ultimately is a non-point. I think this post is one of the better one's explaining this situation. Many others include non-nonsensical arguments.
"Defederation is about what an instance allows in, not what an instance allows out. Defederation stops you seeing the defederated instance's content, but it does not stop them seeing your instance's content." Is the best summary for this situation, thanks!
Hard disagree with to see sentiment that people who use the fediverse want freedom, alot of the people I see on here instead look for choice. 'Freedom' may be a side effect of that, so is many of the positives of choice.
The idea of 'freedom' is inheritly flawed if your relying on someone else.
I have many accounts with instances I trust, and my own instances.
That is choice, not freedom.
To have 'freedom' on the internet means a P2P model where everyone directly communicates with each other.