What's your threat model? What are threat models you would not be comfortable trusting to properly-operationalized PGP?
But acknowledging the fact that I receive a lot of emails from a lot of services, it feels like it would be nice if those services had an option to encrypt the emails they send me with PGP. That way my email provider would not have access to their content, right?
Not all of them. That's actually a feature in GMail: it will populate your calendar from the information it reads in your confirmation emails, right?
I would argue that those modern services that send me a huge HTML-only email that only contains noise and a link to their website are downright annoying. It is very nice to receive a text-only update that contains useful information that I can read offline.
I think the question is, "what is the cost of properly operationalising" it. TFA mentions frequent manual rekeying as a poor man's PFS. Life is too short for that.
(I knew this discussion would summon you like a ghost of crypto past).