No, DisplayPort is not "logically HDMI"! Where did you find that in the article?...

		floatboth on Jan 5, 2017 \| parent \| context \| favorite \| on: HDMI 2.1 Announced: 10Kp120, Dynamic HDR, New Colo... No, DisplayPort is not "logically HDMI"! Where did you find that in the article? You can transmit DVI or HDMI signal over a DP cable — which is used for passive adapters. If you plug the DP cable into your monitor, it's using the DP protocol.

You're right, I got it mixed up with DP dual mode