I think I have the exact same make/model shop light as the one he's ranting about.
In fact,
here is a photo of it, i have not used the fixture in some time, but i do remember the sockets being very stiff. I could never get T12 lamps to fit in it due to them being too big to get a good grip on when rotating them, so i'm surprised he got them in at all, but one of the dozen or so stickers says to only use T8 lamps.
I think the fixture itself might be a Cooper/Metalux make, but i could be wrong.