I disagree - I run a personal mail server and dkim+spf just took a little bit of research to set up, so I'm very glad this brought them to my attention because

I disagree - I run a personal mail server and dkim+spf just took a little bit of research to set up, so I'm very glad this brought them to my attention because I want to do what I can to make my emails trustworthy. If there are any potential downsides to these things I'm interested to hear them, but it seems like they're generally agreed good practices, and hosting your own mail means you're signing up for some ongoing learning and maintenance anyway.