Flatpak weakens the security/isolation of Librewolf (and any browser). Since you are in Linux, you might as well use the distro repo, which will update whenever you update.
What extensions do you use? What browser do you use? The only thing a VPN helps with is hiding your IP. If you dont use a good privacy browser like Mullvad/Librewolf or Cromite, you are still easily trackable regardless of VPN.
The only extension I recommend for privacy and security is uBlock Origin. There are some other good extensions but none that are as significant. More extensions can actually increase your trackability, aka browser fingerprinting.
What is stopping a CPU manufacturer from close-sourcing part/most of their CPU built on RISC-V. Even if the CPU is fully open, backdoors can be hidden in plain sight with clever design. And beyond the CPU, other components in our PC will remain closed. A new ISA isnt going to fix the systematic problems of capitalism or facism, where the corporations can exist and act without really feeling with any consequences. We must find a way to hold them accountable.
If you have friends, "Never Split the Party" is a fun random dungeon-crawler game where each party member (4p coop) has an aspect of the game user interface like health or the map. If you split up you lose that UI. (ive never played binding of Issac but it seems like similar genre)
Flatpak doesnt let the browser use its normal sandboxing for process isolation using user namespaces. Read more here or search on the web for "flatpak weaken browser security": https://discussion.fedoraproject.org/t/security-problems-with-flatpak-browsers-firefox-chromium-bubblejail-seccomp-user-namespaces/121109/5