Making email secure and good is very hard and it involves either making it inconvenient or getting rid of interoperability with existing systems. As long as I've been tracking it your choices for client when using Proton were webmail or mobile apps. The news here is that a new option has opened up not that an old option is being taken away
This is just patently false. GPG is not inconvenient & there are a plethora of apps that has made it much more user friendly. The fact that Proton has decided to take away freedom & tell you it is more secure is just bologna. There is no reason to trust Proton at all.
GPG is a huge pain in the ass to manage. Everyone knows this, because it's the case. The web of trust also doesn't scale and has many problems, handling key securely is hard, making GPG work on all devices is something which is completely impossible for people without solid technical skills.
You're a serial killer. Everyone knows this, because it's the case.
Do you see how that works? You can say whatever you want, but unless you can provide some proof then you're just parroting whatever you've heard. If you want to learn how to use GPG then let me know and I'd be happy to show you several open source tools that make it very easy so you can stop parroting BS. Otherwise, you're entitled to your opinion and I'll continue to believe you're a serial killer.
The bubble you're referring to is your own ignorance.
There are certain things that are known facts, there is no need to prove them every time.
The simple fact that:
There is not a standard tool that is common
The amount of people who use PGP is ridiculously low, including within tech circles. Just to make one example, even a famous cryptographer such as Filippo Sottile mentions to receive maybe a couple of PGP encrypted emails a year. I work in security and I have never received one, nobody among my colleagues has a public key to use, and I have never seen anybody who was not a tech professional use PGP.
We can’t say this any better than Ted Unangst: "There was a PGP usability study conducted a few years ago where a group of technical people were placed in a room with a computer and asked to set up PGP. Two hours later, they were never seen or heard from again."
If you’d like empirical data of your own to back this up, here’s an experiment you can run: find an immigration lawyer and talk them through the process of getting Signal working on their phone. You probably don’t suddenly smell burning toast. Now try doing that with PGP.
Although OpenPGP is widely considered hard to use, overcomplicated, and the stuff of nerds, our prior experience working on another OpenPGP implementation suggested that the OpenPGP standard is actually pretty good, but the tooling needs improvement.
However, if you really believe I am wrong, and you disagree that PGP tooling is widely considered bad, complex and almost a meme in the security community, you are welcome to show where I am wrong. Show me a simple PGP setup that non-technical people use.
P.s.
I also found https://arxiv.org/pdf/1510.08555.pdf, an interesting paper which is a followup of another paper 10 years older about usability of PGP tools.
I also prefer gpg but it is not super beginner friendly. I generally recommend people away from proton and tuta unless they really want encrypted email and gpg isn't something they can figure out
GPG isn't beginner friendly if you're only using the CLI. However, even then there are tons of documentations and even Gemini/ChatGPT would prob be good at helping users create/manage their keys. However, I can provide a list of user-friendly GUI apps to create/manage/encrypt/etc. using GPG if you'd like that make it as easy. I mean, you can pay a company that says they'll protect your privacy but history has shown paying for privacy is unreliable.