Now this is an argument I can recognize. I can certainly see the utility of extra thunderbolt ports, and for those docking something like an MBA with two ports (like I have for a while) a dock with extra downstream thunderbolt ports is a must.OK, USB-C hater here (I've expounded enough on other threads) but I don't see lack of USB-A as a big issue for the M4 Mini - my Studio already has a bunch of USB-C to A adapters plugged in and they sit there out of sight, out of mind...
It helps that the ethernet, HDMI, power and audio sockets haven't been dumped.
The base M4 is actually ahead of the game c.f. the M2 with 3 TB4 ports + 2 USB-C/3.2 ports.
But the less good news - and where the form-over-function rears its head - is:
The M4 Pro model has actually lost a TB port (and hence has one less USB port overall) c.f. the M2 Pro. Since even the regular M4 can support 4xTB4 (and does on the iMac) this looks like a mixture of form-over-function (no space on the unnecessarily-small rear panel or motherboard edges) and penny-pinching (Apple save a TB re-timer chip and some mainboard circuitry - but somehow that wasn't a problem with the M2 Pro).
Even the regular M4 could have had 4xTB4 - but maybe you can justify that "because entry-level" - but the M4 Pro isn't entry-level (if the "pro" means anything, it's that).
Then.. the front USB ports sound like a feature - except they haven't been added - they've been moved from the back to free up space. Front USB is a nice extra for memory sticks etc. - but not at the expense of rear, out-of-sight/out-of-mind connectivity. (C.f. the Studio where the rear panel is much the same as the M2 Pro Mini and the front sockets are extra).
I *guess* I'm going to console myself for now with the idea that on M4 pro they are TB5, but I certainly admit being wrong for those users with 4 thunderbolt ports currently in use.