The HDMI Forum rejected AMD's open source HDMI 2.1 implementation
https://discuss.tchncs.de/post/11743231

The HDMI Forum rejected AMD's open source HDMI 2.1 implementation - tchncs
Sounds like hdmi Forum are a bunch of twats. Time for a new format.
DisplayPort already exists
USB-C display output uses the Display Port protocol
Can it use others, and is there a benefit? USB C makes a lot of sense; lower material usage, small, carries data, power and connects to almost everything now.
There’s some really high bandwidth stuff that USB-C isn’t rated for. You have to really press the limits, though. Something like 4k + 240Hz + HDR.
That doesn’t even seem so unreasonable. Is that the limit though? My cable puts a gigabyte a second down it so I wouldn’t imagine that would hit the limit.
It is trivial arithmetic: 4.52403840*2160 ≈ 9 GB/ s. Not even close. Even worse, that cable will struggle to get ordinary 60hz 4k delivered.