All the features of HDMI 2.1 are optional and this could get confusing quick. https://t.co/xOwypPwyJt

— PC Gamer (@pcgamer) December 14, 2021

Better pay close attention if you’re shopping for cables.

HDMI 2.0 cables can be labelled as HDMI 2.1 with no enhancements https://t.co/Nk1eLL1ULj

— THE RED DRAGON ? (@TWTHEREDDRAGON) December 14, 2021

気になる海外のITニュース?
Turns out that “HDMI 2.1” ports don’t need to actually support HDMI 2.1 features - Ars Technica#ブログ#ITエンジニア#ブログ書け#駆け出しエンジニアと繋がりたいhttps://t.co/deqgOatfNk

— Developpers Gr (@developers_____) December 14, 2021

HDMI standard looked at USB 3/4 and thought "heck yeah I want to be just as understandable as USB" https://t.co/H8ivE5aEU5

— Kevin Jones ?️‍? (@vcsjones) December 14, 2021

Don’t buy a monitor or TV just for HDMI 2.1 — read the fine print or you might get fooled https://t.co/NuzLytSYNA pic.twitter.com/ajpHWU3Quh

— The Verge (@verge) December 14, 2021

샤오미 모니터같이 HDMI 2.1이라고 표시해놓고 HDMI 2.1 풀 스펙을 지원하지 않는 기기들이 있으니 소비자들이 속지 않도록 주의해야한다고.
그리고 HDMI 표준화 기관이 일 제대로 안한다고 깐다. https://t.co/cqktydxRrk

— 이상자냐 (@esangjanya) December 14, 2021

The Verge followed up with HDMI org as well and share their thoughts on this mess:

Don’t buy a monitor or TV just for HDMI 2.1 — read the fine print or you might get fooled - The Verge https://t.co/e9YtCiZoSd

— TFTCentral (@TFTCentral) December 14, 2021

What fresh hell is this https://t.co/SyReuMARpc

— Jeff Woolsey (@WSV_GUY) December 14, 2021

Get ready for angry customers. https://t.co/LtZXbOUOiv

— PC Gamer (@pcgamer) December 15, 2021

lol great - we've got the USB-C nightmare all over again https://t.co/KCrBhROrpK

— pünïshëd dÏlbërt (@PunishedDilbert) December 15, 2021