Why are the Ubuntu developers so obsessed in rushing Rust into their distro?

For some reason the developers of the Ubuntu Linux distribution have decided to replace all the GNU core utilities, which are written in C, with replacements written in Rust.

The problem? For an unfathomable reason they are rushing the publication of these new replacements even before they are ready.

Indeed, the GNU core utils have a big bunch of automated tests that are run on them every time before a new version release. The Rust replacements developed by the Ubuntu developers fail hundreds of these tests. Some of the replacements fail all the tests for that particular utility.

On top of that, many of the replacements written in Rust are significantly slower than the originals that are written in C. Some of the utilities run a whopping 17 times slower than the original C counterpart. Not 17% slower; 17 times slower! Other utilities (such as sort) can't handle files even nearly as large as the original C version, failing with files that the C version has no problems in handling.

Yet, for some reason they have decided to publish these replacements in the newest version of Ubuntu.

And what do you know, the new version is already broken. Among other things, automatic updates are broken, and the reason is the faulty implementations of the core utils.

So the new replacements written in Rust are slower, can't handle files as large, and many of them are outright broken, failing a significant amount of tests. Yet, they were rushed to publication anyway. 

Why?

That's the thing: Nobody knows. Nobody has any idea.

The best explanation that some people have come up with is that for some strange reason the Rust programming language causes quasi-religious obsession within its community, and the Ubuntu development team has become infected. They absolutely must shove Rust everywhere, no matter what, even if it's slower, more inefficient, lacking features, and even outright broken versions.

And do you know what the kicker is? For example the bug report that reported the 17-times slower performance for the Rust version of the tool was closed as "not going to fix". They literally don't care that it's 17 times slower, they only care that it's written in Rust, and have no intention to even try to match the speed of the original.

Again: Why?

Nobody knows. Probably quasi-religious obsession.