It would have taken 10 seconds to add a box over the username while he was adding those arrows, given the context of the article, it seems outright irresponsible.
Hardly. He's asking permission to talk to them in the first place, and presumably asked permission to use their names in the article. And the article body mentions them by name. And the article is about how to find them in the first place.
You're advocating blurring the names out but then telling readers how to find them very easily (it's the point of the article) - this would justifiably open the author to ridicule.
You're advocating blurring the names out but then telling readers how to find them very easily (it's the point of the article) - this would justifiably open the author to ridicule.