Earlier quoted context omitted.
They did better with the limited space they have — they included a bunch of multi-functional USB-C ports that can be used with dongles for additional HDMI ports!
USB-C (or Thunderbolt) can also carry a DisplayPort link natively, and you don't even need a dongle for that. Workstations don't really care about HDMI, that's for TVs. Not only that but with the Ultra variant, all of the USB-C ports are thunderbolt 4 ports at 80gb/s, that's a massive amount of IO. (note that despite the number of ports - only 4 of them can be running displays, plus the HDMI port gets its own channel…
And people who only have HDMI cables! I was using display port on my old MacBook, but I'm using HDMI on the new one as I already had an HDMI cable, but not a USB-C to DisplayPort one.