I've only found 3 reasons to use HDMI with a PC

HDMI isn't dead yet.

How to use a computer monitor as a TV

Want to turn your monitor into a TV? Learn how to use a computer monitor as a television with the right cables, accessories, ...
The Droid Guy

How to Play PC Games on Your TV: Every Method Explained (2026)

Steam Remote Play Low–Medium (15–40ms) 4K 60Hz Streaming to a smart TV or Steam Deck Free (requires Steam) Sunshine + Moonlight Low (5–20ms) 4K 120Hz Best open-source streaming, works with any game ...
Ars Technica

Connecting a desktop PC to USB-C monitor with HDMI for video - will this work?

I have a Dell U2720Q monitor that accepts HDMI 2.0, DisplayPort 1.4 and USB-C. I use USB-C because the monitor acts as a hub for a range of peripherals (keyboard, mouse, webcam, speakers, etc.etc) and ...