The common denominator seems to be your phrasing, not everybody else’s “sarcasm detectors.” And unfortunately a lot of people write comments like your joke but actually mean it.

Ad populum. What’s the common denominator on a nerd forum w.r.t interpreting tone cues?

No, not even the mock URL was enough.

If we’re going to go down that route, then we should also acknowledge that it’s a nerd forum that is typically reserved for serious discussion. Being sarcastic and cracking wise is generally discouraged