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The title is a bit clickbaitey but I didn't want to editorialize it. Dave recreates the video demo accompanying the recently announced LK99 superconductor using a (non superconducting) copper clad PCB and HDD magnet.
I watched the video and I agree. He goes a bit sensationalistic and makes fun of the researchers for that specific video, while still saving face saying they could still be on to something.
Nothing's busted, Dave is rushing to judgement (disclaimer: I'm going by the title, haven't watched the vid. EEVblog's usually on the money though. See eg. his vids on solar roadways / bicycle lanes. That just racked up another "confirmed, it's a bust" over in the NL).

In this case: too early to tell. The jury is still out.

From what I've read, doesn't look good though.