I also feel that the share of users interested in privacy that actually also use Linux is much bigger than 6%

Proton Drive for Linux (easily the biggest pain point for Linux Proton users) is on their roadmap: https://proton.me/blog/drive-roadmap-summer-2025

At the same time, we’re continuing to improve the SDK — preparing it for public release and ensuring it provides a solid foundation for the upcoming Linux Drive app, a popular favorite on the community wishlist.

Better late than never! However the wording is a bit vague and it doesn't explicitly say Drive for Linux will release this summer. I hope it will though.

I know it's just part of the reason, but there's one more thing we can be thankful for to Microsoft. I hope they keep butchering Windows, and slowly but steadily they make business applications and multiplayer games transition to Linux.

Finally!