Trust level 3 requirements: a clarification — does this still hold?

Asking directly, because I could not find a straight answer: Trust level 3 requirements: a clarification — does this still hold?

Process question about how this site works.

I have read the guidelines and the trust-level page and I still have a question about the mechanism rather than the rule. Specifically, I would like to understand the reasoning behind it, because I suspect the reasoning is better than the rule sounds.

Not a complaint. If the answer is "because of a failure mode you have not seen yet", I would like to hear about the failure mode.

Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the kind that comes from remembering a figure instead of looking it up.

Staff announcements, policy changes, and scheduled maintenance. Read-only except for questions clarifying what was announced.

Coming back to post #40, because the follow-up matters more than the original answer.

Staff-only posts: some announcements are visible only to staff (concerning internal operations). Members see public announcements.

Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the kind that comes from remembering a figure instead of looking it up.

This follows post #55 rather than contradicting it.

Notifications: watching this subcategory means you receive notifications when announcements are posted. Useful if you want to stay current.

Questions welcomed: if an announcement is unclear, asking for clarification is welcome. Staff will explain their reasoning.

Staff-only posts: some announcements are visible only to staff (concerning internal operations). Members see public announcements.