I love the concept of PGP and how well it seems to be integrated. I also don't know a single person who uses it or a provider/software capable of decrypting it. I think that's the biggest issue with PGP. Short of asking someone directly, you don't know if they'd be able to receive a PGP encrypted email, so you wont send one.
That's not a Gmail problem, and no reason to migrate. Some use cases just don't fit email, and for those, we have other, more fitting platforms.
> So, I went with mailbox.org that still offers integrated PGP encryption, and if you want, you can always use external PGP too (which I was already doing with Gmail).
Ok, so now you have two problems.
It is a problem with Gmail, because they're helping themselves into your email, as was explained by the author in the sentence immediately after the one you quoted:
> Technically, Google can store every message you receive and know everything, and U.S. agencies can request access to that data