Additional context from his pinned comment to that video:

I’ve been away from internet all day and it sounds like I got my hands on a couple of bootleg/counterfeit sets here! That’s neat. Love that. I’m going to leave this video up as it is because the overall lesson here remains mostly the same - but I am embarrassed this thought never occurred to me, especially with The Good Place Blu-rays. I honestly thought a Blu-ray release of that show would be niche enough that a run of pressed discs wouldn’t be justified and didn’t question it. I’ve not been paying attention to physical media for nearly a decade so I’ve missed some memos and made one too many assumptions!