I feel that the second title is better, as it talks about the kind of testing they are using, instead of being a click bait of "HOW DID IT GET YOU FIRED?".
FWIW the change to this headline seems like the right decision to me.
I can't find the submission but one recent example that comes to mind is a presentation on radar detectors that was fascinating. I clicked because the submitter described the article; the original title was (IIRC) the model number of the radar gun.
Later a mod changed the HN post back to the model number, which had zero relevance to anybody not in the radar gun industry.