It's a grand putdown without any supporting information.

Comments get more shallow as they get more grand and generic. "Vanishingly little value" is a dismissal. Note also the dismissive use of the j-word ("just") and the implicit admission that there's no particular support for the claim ("I'd bet"). Also the snark ("Careful, you're dangerously close to realizing"), which invokes an entire genre of internet putdown.

There's no information here other than booing a class of people. Most people enjoy that when the class is high-status, but we're trying to optimize for curiosity on this site, and that genre is something else entirely.

Ironically, (erroneously) quoting the rules at someone is.

How the hell is it not?