IANAL, but AFAIK that’s incorrect. If you’re the only copyright holder, you can issue multiple licenses for your work. GPL doesn’t allow you to rescind previous issues, so anyone in possession of your GPL code can still modify and release it under the GPL freely. But it doesn’t prevent you from issuing your own work under a different license.
There isn’t usually much economic sense for most applications to do that because anyone can fork the project and distribute it for free. For Proton, since they still hold the server as closed source, they could simply introduce a breaking protocol change and all the forks would be useless.
A-ha! So there’s a bit of both client issues and user error. My client crops the preview image of the site. And when I clicked the link to the mastodon post, I didn’t pay attention to the image because I had already seen it in the client.
Still, this being a general privacy group, it would be good if OP didn’t assume the reader was familiar with current EU politics. A small paragraph would be enough to contextualize the post.
I’m using primarily LibreWolf at home too, but every now and again there are websites that won’t work with it. So I still keep Firefox around for that because I haven’t figured out how to add exceptions to specific sites for LW.
Might actually be a good privacy strategy though. The sites that break are probably the most invasive. So it could be better to run them on a different browser that’s what you normally use, perhaps with efforts to spoof fingerprinting. Other than not visiting the site, of course, but it’s a decision you gotta make.
I know you’re just using the original title, but consider changing it to this and saving some neurons for the next readers:
CBP’s “Privacy Impact Assessment on commercial telemetry data” highlight urgent need for PIA reform