HOW DARE YOU ASSUME THEIR GENDER?!? YOU’RE SUPPOSED TO SAY ‘THEY/THEM’ FUCK YOU??? THIS NOW MEANS YOU’RE A FASCIST BIGOT IF YOU DON’T CORRECT YOURSELF TO RESPECT THEIR PRONOUNS… ARGGGGGHHHH!!!
Ubuntu GNU/Linux is not entirely FOSS, as it ships with non-free software by default. If you’re committed to FOSS principles, I would recommend Debian GNU/Linux instead.
However, it’s important to note that Debian GNU/Linux is not recognized by the Free Software Foundation (FSF) as a completely FOSS distribution. This is because Debian includes non-free firmware packages for those who need them.
From a security perspective, this is acceptable, as the Linux kernel won’t load these packages unless the corresponding hardware is available. Debian ships with Free Software by default, and I would suggest giving it a try if possible!
It’s essentially the same as Ubuntu, but more freedom-respecting.
That’s not true anymore, somebody from the community reverse engineered the MRC blob a couple months back. The only RYF concern is Intel Management Engine (which is disabled, but still its there). LibreMRC is still being tested, the resolution for SeaBIOS is still messy but it works!
Backdoors in the CPU microcode, backdoors in the proprietary firmware of your motherboard / hard drives, backdoor through Intel Management Engine / AMD PSP. They’re all hardware level backdoors that can’t easily be disabled / replaced on newer systems.
There are only a select few of systems out their that can run a fully free BIOS with no IME, but those systems are about 15+ years old. In terms of freedom, we’re fucked. Even if you do switch to GNU/Linux, you’re still not entirely free.