Rust

That seems based on the same misconception as the whole "fighting the compiler" view on Rust, namely that other languages are better because they let you get away with not thinking through the problems in your code up front. I am not surprised that this view is common in the C world which is pretty far on the end of the spectrum that believes that they are a "sufficiently disciplined programmer" (as opposed to the end of the spectrum that advocates for static checks to avoid human mistakes).

The problem you mention is fundamentally no different from e.g. changing some C internals in the subsystem you know well and that leads to breakage in the code in some other C subsystem you don't know at all. The only real difference is that in C that code will break silently more likely than not, without some compiler telling you about it. The fact that the bit you know well/don't know well is the language instead of some domain knowledge about the code is really not that special in practical terms.

Ask the Rust maintainers to fix it presumably? The antagonist in the video above claimed there are 50 filesystems in Linux. Do they really fix all 50 filesystems themselves when they change the semantics of the filesystem API? I would be very surprised. I suspect what actually happens currently is either

1. They actually don't change the semantics very often at all. It should surely be stable by now?
2. They change the semantics and silently break a load of niche filesystems.

I mean, the best answer is "just learn Rust". If you are incapable of learning Rust you shouldn't be writing filesystems in C, because that is way harder. And if you don't want to learn Rust because you can't be bothered to keep up with the state of the art then you should probably find a different hobby.

These "ooo they're trying to force us to learn Rust" people are like my mum complaining you have to do everything online these days "they're going to take away our cheque books!" 🙄

From what I understood, the Rust devs weren't asking to change the interface, only to properly document it, and asked the kernel devs to cooperate with them so that Rust for Linux doesn't break without warning.

IMO, if a developer finds Rust too difficult to learn, they probably shouldn't be writing kernel code in the first place.

How much more? When it comes to whether I'd write GPU drivers for money, I can tell you that LF doesn't pay enough, Collabora doesn't pay enough, Red Hat doesn't pay enough, and Google illegally depressed my salary. Due to their shitty reputation, Apple, Meta, or nVidia cannot pay enough. And AMD only hires one open-source developer every few years. Special shoutout to Intel, who is too incompetent to consider as an employer.