

https://en.m.wikipedia.org/wiki/Chernobyl_(miniseries)
It was released on DVD and Blu-ray, if he purchased the disc and ripped it to his media, and hasn’t shared those files with anyone, then it is legal, as an exception to copyright in the US, where Jeff and Google are both based.
Jeff has stated on multiple occasions that he purchases and rips his media, and does not use piracy.
People like playing Nintendo original games. Mario games, Zelda games, etc.
The only way to legally play those is on the switch.
Yes, even non children play those games.