Just google it.
Samsung stopped putting 3.0 in their OLEDs a year or so ago. I think they still offer it in the QLED line.
LG also stopped a couple of years ago.

Nexgen Certified TV's have the requisite keys embedded into their firmware. Broadcasters publish their video so that it will respond to either type of DRM keys (embedded or internet). Your comments simply do not apply to the majority of OTA viewers who choose to view 3.0. For the tiny group of ...

The TV's can replace the static keys, if they get hacked. On board, there are 4 keys per group with 4 groups (16 keys). If necessary, any one group can be replaced by a firmware upload.
If the internet went out during a disaster, most likely the power would too, so who cares? If only a portion of ...