So when is a vacuum good enough? I wonder if he understands that the sublimator will not work in atmosphere. Working in vacuum == working for that piece of technology. But I fail to see any way in which the test is invalidated if it isn't a "hard," "high," or whatever arbitrary standard of vacuum is named.
Of course, I also fail to see why the test is assumed by our Neil to either not have taken place, or have been done incorrectly, if it isn't on video. Adding anecdote to the careful explanation by others here, I'm currently working at a place that builds precision audio gear. Our gear has an extremely high standard of reliability, and part of achieving that is individual testing of every single unit (as well as all the significant sub-assemblies). There are shaker tables and cabinets for thermal cycling and of course audio test chambers with plentiful software everywhere around the facility.
But even today, when CCDs are about a dime to manufacture and every phone has a built-in camera, I have yet to see any of these tests including video footage as a regular event. For some reason, even with the combination of label reputation, legal responsibility, and the tracking back to notice when more failures are hitting the testing stage and where the problem is originating from (which can be a very expensive proposition when you are throwing completed pieces of high-end hardware into the recycling bins), I have yet to see a video being made. Anywhere.
Maybe, just maybe, engineers in the real world are less seduced by pretty pictures in YouTube convenient format, and communicate in other forms?