Not necessarily, you still need backups or snapshots especially on home directory in case software have a nasty bug like deleting your data.

Yup and I am getting sick of hearing this even on Arch Linux. Like, mofo, you could literally run a snapshot or backup before upgrading, don't blame us if you're yoloing your god damn computer. Windows have exactly the same problem too and this is why we have backups. Christ.

On my Arch Linux Install, I literally have a Pacman Hook that would forcibly run backup and verify the said backup before doing a system-wide update.

That one was an old documentation that some of the Chinese folks actually document a lot of quirks related to X11 protocol. I paid about $6000 for translator to work on translating that doc to English and I use it to build my own GUI Toolkit on Linux that I still use to this day.

How it really works:

mpf_t temperature;

Yep, and if open source licensing could be revoked on a whim, you can imagine the chaos that ensued. That would be my understanding as well, old version that have MPL license is perfectly fine to fork off, newer version might not be as it is under a different license. One of the reason why I liked Apache License is that it have make it explicitly clear that it's irrevocable whereas MPL it is operating on an assumption that it's not revocable. The most fundamental problem with the legal system in USA is that no law is "set in stone" and leaving things to assumption is open to reinterpretation by the judge who may have sided against you. (Hell, Google vs Oracle on Copyrighted API is still on case-to-case basis, so take it as you will.)

Disclaimer: I am not a lawyer. I just share what I learned from Legal Eagle youtube and few other sources.

I would spend it on language translation basically, paying someone to translate international documentations on things that aren't documented in USA no matter where you look.