How quickly everyone forgot DVI-D. Aside from non-RGB modes, hey, it's almost _exactly_ HDMI.

That’s true for earlier iterations, but definitely not for an actual HDMI 2.1 signal. I think you can still connect to a DVI-D monitor and the source will automatically downgrade, but I haven’t tried it in a very long time.

DVI-D doesn't carry audio; HDMI can do a bunch of uncompressed channels simultaneously.