How can this even relate to the ideology of the first document? I am deeply saddened by these new rules.
The previous document was written in a time when only C was the language in the Kernel. Now that two different languages and eco systems exist, it makes lot of sense to not mix them up. The document with guidelines for C code was needed, because there was no uniform guide that every user used. But with Rust it is different. There exist rustfmt and practically every user is learning and writing code with it and every public documentation and library is using this tool; most of them with default values.
You don't mix C with Rust anyway, so why do you want force every Rust programmer and code formatted like C? I don't think this is an issue that needs to be fixed. Are you programming for the Linux Kernel? Do you do it in C and Rust? Otherwise, why do you think this is a problem?
Edit:
Also the very first paragraph and second sentence in the linked document says this:
Coding style is very personal, and I won’t force my views on anybody, but this is what goes for anything that I have to be able to maintain, and I’d prefer it for most other things too.
But you seem to ignore that and force everyone to write code like this, declaring it to be an issue in the code (which it isn't). Do you not think that other Linux developers didn't think of this? Why is this an issue that has to be fixed and how do you explain this? Why does the C coding standard apply to Rust, when Rust has its own established one?