I think it’s bad advice to push people away from running email servers. This is how the gmail monopoly was created. It’s better if we all do it and the ecosystem improves. Then we can have better spam filters for example.

Running your own mail server is something that should be taught in schools -- along with building linux from scratch and creating a basic website. Computer literacy is only going to be more important going forward so understanding the basics of some of the most fundamental aspects of the internet will go a long way.

And for those who become programmers: they SHOULD roll their own crypto stack at least one -- if for no other reason than to understand why they should never do it again (unless that becomes their specialty).

The solution is to let computers worry about these things. Start using and contribute to existing open source email server setup scripts. Or create more integrated open-source email services from the ground up.

While short-term pragmatism says "let someone else worry about it", long-term it's harmful for the email ecosystem to be this centralised.