I don't want to judge this 'feature' too harshly without that data, but couldn't 80% of the value of this be achieved by putting the text 'please don't editorialize titles of submissions except to de-clickbaitify them' in the submission form?

So unsure what this whole thread of people complaining about HN supposedly mangling titles.

Given breath mints.

Or host them directly as an .mp4 file would work fine in most cases.

(Oh, and it also just ends abruptly after "Here's what the machines do:")

It gets washed off with soap and water inside the machine, you can tell because in the video you can see soap suds, shortly after it shows the UV step.