Earlier quoted context omitted.
"Moving to Fastmail" is such a popular alternative that if they ever get to any kind of reasonable size we'll be in the same position all over again. That should not be the suggestion. Many smaller providers encourages the competition necessary for an open network, not a small number of huge providers.
You're right. I use Fastmail scared that my emails will go to spam. But ideally I want to live in a world where my emails hosted on my email server will send like they did 10-20 years ago.
It's sad that it's no longer viable to have your own email server