Marco's audience includes a bunch of people who wouldn't have known this, or might have assumed it's back up: this draws attention back to it for people who like discussing this sort of thing (although, past that point, I largely agree with you, as I'm not certain what really there is to discuss).

That sounds like "I just read the title so I could post a snarky remark". He does put some suggestions forward of what he thinks could be the root cause.