I just noticed the Moderation Actions menu for threads for the first time and I see it has an option to hide the thread. Is this intentional? I know there have been several instances where people have deleted their content and the moderators have restored it saying that such behaviour is not wanted, which doesn't seem too dissimilar from just hiding the entire thread.

For GDNet+, yes, it's intentional.

From https://www.gamedev.net/info/gdnetplus.html/:

Quote

Forums

• Create Polls
• Hide your own topics - useful if you made a mistake
• Lock and unlock your content
• Replies in a topic are highlighted
• "Edited by" is not shown when a post is edited

Cool, thanks.