I think DisplayPort is not mentioned because Nvidia hasn't upgraded their cards to 2.0. Super disappointing. 4k/144Hz/HDR is enough for now, to be honest, but DP2 can do 84/144Hz/HDR as long as it has DSC, 244Hz with subsampling. The slow pace of development and deployment has hurt everyone for sure, but I don't think the standard is bad in itself - just a bit late.