Mac Mini ports
the port selection has been cut back considerably
Not really, especially depending on what you're comparing it to.
My current Mini is the 2018 Intel, which has 6 USB-ish ports -- plenty for what I need.
Its successor, the M2 Mac Mini, cut that down to 4 USB-ish ports, which was kind of obnoxious, especially since it also only supports 2 monitors. So I've been holding off on upgrading.
The new M4 Mini, as you note, has 5 USB-ish ports, so that's one more than its immediate predecessor, and only one less than the Intel mini, plus it's back to supporting 3 monitors.
(All three also have an Ethernet port, an HDMI port, and a headphone jack).
I'd rather have USB-C by default than USB A going forward.