Yeah, but the website owners have access to a lot more information than is just available publicly. You probably could be identified by a fed if reddit gave them that information.
You might not be worth the effort, especially since most other people would probably be less effort to track down. But that doesn't mean it isn't possible.
I mean, if they're doing what the meme depicts, they've probably already had that conversation in a straightforward way. It does say "the 8th time" after all. If someone is repeatedly asking for your advice and then ignoring your advice, I think a little snark is reasonable.