Literally only if you use exactly one HDMI device.
Sure, but that's… extremely common? I personally use two external displays, usually, but I'm betting people who use only the internal display >> people who use one external display >>> people who use two or more.
If you use four TB3/USB-C devices now, having a HDMI port doesn't help,
Seriously, who uses four Thunderbolt devices?
Four USB-C devices? Maybe. But one of those "devices" will really be the AC adapter, and by your own logic, that's kind of moot because you might as well get a dock or hub. Is it great that we can plug those in on either side? Yes! Do we need four of those ports? No, not really.
Plenty of displays either don't support HDMI (hint: every single display Apple has sold, either their own or 3rd parties - for the last decade) or are limited to lower resolution/refresh rate over HDMI (hint: any display > 4K, which means any good display over about 24")
Until Apple is willing to do a display in the low-to-mid three figures, they basically don't have a display. The Pro Display XDR is extremely niche. The Thunderbolt Display before it was interesting in its cable solution, but otherwise overpriced, and not even Retina (which made sense when it was introduced, but… made it age really poorly).
And as much as I wish there were more Retina-style displays above 24 inches (or, really, at any size), there aren't, and moving from HDMI to USB-C doesn't change that. So, $300 4K @ 24 inches display it is, maybe with a slightly overprovisioned resolution to get Retina pixel density (at slight quality loss). And yes, such a display will almost certainly be HDMI. It could be DisplayPort, but I've rarely seen those in practice. It will almost certainly not be USB-C, because why would it be?
You're also ignoring projectors. Again, almost certainly HDMI.
Regardless of that - plenty of use-cases for TB3 ports, are completely unrelated to displays - because surprise ****ing surprise TB3 ports can connect to all number of things...
They can connect to plenty of things once you have an adapter, sure.
(Nobody is advocating that Apple gets rid of TB3.)
How could I miss this line before.
I mean where do I start. Do we address the simple math issue where 3 is less than five? Nah. Too easy.
I don't even know what the hell you're talking about here.
Right now, the higher-end MacBooks Pro have four Thunderbolt ports. I don't know anyone who actually connects four Thunderbolt devices, or, say, two Thunderbolt devices and two USB-C devices. They either use one or two of those ports, or they just use one, which is a dock or hub, and then that does everything else, and surprise: that "everything else" mostly doesn't involve either Thunderbolt or USB-C at all.
So, nobody seems to use all four. And nobody seems to be saying "if only we had a fifth port".
Therefore, in this hypothetical scenario where Apple sacrifices one Thunderbolt port in favor of a USB-A or HDMI one? I don't think anyone will mind. It will be a net win.
I'm so glad you completely understand the entirety of computer use on the planet, and have deemed that no one needs any more than three TB3 ports, and that HDMI is in fact a universal standard that everyone uses everywhere.
The hypocrisy here is hilarious.