>Why do we care?

We're developers, and many use Rust (though organizational politics can effect many other projects as well, how it plays out here could affect other situations etc) so in one way or another care very much about if the project is being run effectively, which side to support in internal conflict so as to ensure the project keeps being run effectively etc.

>not going to get involved

Getting involved or not are both political acts.

Yet here you are getting involved.

Proprietary software has a lot of problems and open source was a good response to them, but it's notable that proprietary isn't as prone to the 'middle school' problem. When money is involved, there's more alignment.