At the very least on Reddit it would give me context on whether someone is asking a question in good faith or not. I live in a relatively liberal city, so there's regularly people who drop in to try to ask pointed questions in an attempt to bait people into responding a certain way, so I can know whether to ignore or try to respond in a helpful manner.

How would you determine which value to display? It seems to suffer from the same issue where if you display the sanitized value then the comment is still missing necessary characters, but if you use the unsanitized value then your application will be vulnerable to XSS.