[CaptSpify]

* citation needed

That's not been my experience at all. I've been running my own email server for years and I've yet to hear about an email being blocked. I know many other people who run their own email server just fine.

[catamorphismic]

Indeed, I've been successfully running my email server for the past five years and mail has no problem reaching gmail users.

I think people have just become defeatist.