Let's be serious, most people are regulars and this has been on the front page multiple times like constantly. And it was upvoted 4 times on new to get to the front page rapidly. It's not something new that we're all "Oh that's cool".
We also know there are tons of sock accounts.
And no half of the posts on front page can't be put in that since they aren't constantly reposted like this.
So, while there are a few people who will have learnt about this for the first time. Most of you know what it is and somehow feel like this is your chance to go look I'm smarter than Iain. And I think you've failed again.
Do you know the joke with "I'll repeat the joke to you until you understand it?".
That's why some things get reposted and upvoted. In hope of getting someone else to understand them.
By the way, do you complain about sock accounts when yet another "Here is this problem, and by the way we sell a product that claims to solve it" gets upvoted?