If your issue is related to an Add-on plug-in, you may be asked about the version of the add-on or (if appropriate) whether certain prerequisites are installed. In 5.2 and newer, this information is available in the Addon Manager. In earlier versions, you might need to use the Prerequisites Checker addon gramplet.
Would it be possible to add a “copy” button there which would copy all the info needed to go into a post, to the system clipboard. I know this is trivial but it would create a standard to help answering the post.
A context menu already exists in the About dialog with “Select All” and “Copy” options.
The dialog already has a bit of clutter with “About”, “Credits” and “License” buttons (that act like tabs) in Linux. And “Credits”, “License”, and “Close” buttons in Windows.
I’m not certain a Button would help much. Because this would create a button that does not appear to DO anything. It could copy the data to the Clipboard. (That is an action which is “silent”. No feedback in the GUI.) But then what? It could not reliably create a Discourse posting because that requires the user to have an account and be logged in. The same with the MantisBT issue reporter.
I suppose that it could do a “Mailto:” and put the data in the body with a pre-defined subject. Or even include links to Discourse, MantisBT, and/or the User Maillist. But that would probably amplify confusion.