For 4K content, yes. But what of shows like in the OP, 9-1-1, does h265 work?
As I recall, it depended on what plan you had for awhile, that that stopped too.
[Edit] – I just validated this. There isn’t even a Codec choice on the actual download, but I can tell that a 4Gb file size on a show that normally gives 1.5Gb means it is probably h264.