You're right, it's walking a tightrope. But they do put this at the end (on the Reddit post[0], not GitHub):
> we wish to ... focus on Constructive Criticism: how to improve the state of things, moving forward.
> There are many potential topics that are worth exploring:
> What should the Rust Governance look like?
> How should the Rust Moderation Team be structured? What should be its responsibilities?
> How can we ensure accountability and integrity at the top? Who Watches The Watchers?
and I don't see how these can be meaningfully discussed by someone who doesn't know what went wrong. You can't diagnose and find a remedy for a problem that you can't even see. So while the sentiment "let's talk constructively" is fine, in public at least it seems like a non-starter.
Note that I'm not saying that this means they should publish a tell-all either -- but it needs to be recognized that, without that openness, the divide between insiders and outsiders remains. And the outsiders can't do anything constructive about these questions.
[0]:https://www.reddit.com/r/rust/comments/qzme1z/moderation_tea...