I’m just wondering, is it possible to make those backticks to automatically surround the flow json if pasted in here? The format of the flow JSON shouldn’t be too hard to detect in plain text
No, we don't have any control of the underlying software this forum uses.
But as per this topic I've disabled the smart quote substitution so flows won't get mangled.
I have found the setting to change the behaviour of the Preformatted Text button in the formatting toolbar. Rather than indent text by 4 spaces, it will now surround it by backticks - as we describe in this much-linked-to post: How to share code or flow json