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One of your examples was eight and a half years ago with one upvote... calm down :)

Indeed, but one was three hours ago, and another was only 2 hours ago.

Looks like Back Channel recently moved to medium, and this is on the front page of it. That explains the reposts.

The opposite actually. Steven Levy joined the Medium and started Backchannel. Recently, the publication was acquired by Conde Nast.