I'm pro-ports (HDMI, SD Card, and would love a single USBA) not because of speed, but because of practicality. It's a lot less cumbersome/inconvenient to have an HDMI port on my laptop than having to carry a dongle with me. Totally understand TB5 likely has more bandwidth than HDMI 2.1.
Also, what if I need HDMI and other things, but only have 4TB ports? I've now occupied an entire port just for an HDMI adapter. If I need to charge (and there was no magsafe) now I'm down two ports. My work laptop already suffers a similar problem where I have 2TB ports and 2 USBA ports. Anytime I leave my desk I have to ensure I have a USB hub with me for the mouse, headset, Security Key, etc..
🤷♀️