The micro hdmi thing (which I too loath) is for digital signage and industrial machinery - we (home users) aren't the audience and haven't been for a long time.

Being able to run two sides of an advertising board, or two control panel screens on a big hunk of metal doing fabrication things in a factory was more important to Raspberry Pi as a business apparently.

Why he heck they didn't just go with 1x normal hdmi and 1x usb-c +DP for the Pi 5 is a mystery, perhaps the SOC doesn't support it or something.