Then there are stuff like TVs who for no good tech/practical reason keeps USB A. That will be an annoyance in the future, believe me.
Sauce for the goose is sauce for the gander: USB A to USB C adapters are cheap and convenient.
...what disciples of the One True Port seem to forget is that many, many "USB-C" devices are only running the same old USB 3 protocols as before and gain zero advantage from running via a USB-A port. Thunderbolt devices still carry a hefty premium - and are overkill for many uses when USB A can go up to 10Gbps (not supporting 10Gbps USB 3.1g2 over USB A was an Apple thing - you'll find 10Gbps USB-A ports on PCs and some TB hubs). This was even more prevalent ~2017 when Apple (thankfully)
didn't drop USB-A from the iMac and Mini.
Sure, USB-C
can support DisplayPort, USB4/Thunderbolt and now up to 240W power - but that's optional and requires more complexity and expense at the host end - and I suspect that even a USB-only USB-C port costs more to implement than USB-A. The so-called "Transition" Macs already supported as many Thunderbolt 3 ports as the chip allowed - the USB-A ports were a bonus and didn't come at the expense of TB ports - or even USB-C ports with video and higher power delivery support.
Unless
all of your devices were Thunderbolt or USB4 those extra USB-A ports were useful to have.
I think its probably timely that the new Minis have gone all-USB-C - and good that at least the M4 Mini has managed to offer more ports in total than the M2 - although the M4 Pro has lost a port overall.
Some vendors kept USB - like Beats with USB micro - far too long, and that`s why transition are stretched over many many years
No, the reason the "transition" took so long is that Apples are not the only fruit and USB-C uptake has been much slower on PCs. Even on Android phones, USB-C has only become ubiquitous in the last couple of years. Meanwhile, there are a vast number of perfectly good devices out there that work fine with USB 2 or 3 and although you
could use them with an adapter or replacement cable there's absolutely zero gain from doing that.
Then there are various key USB-C products that, again, have only appeared in the last couple of years: like cheap, multi-way USB 3.x hubs with downstream USB-C sockets (there are a now few 4-way ones). Until recently, I was relying on a USB-A 3 hub to get enough ports, I've recently switched to an Elements TB4 hub because I saw one on offer, but still cost way more than a ragular USB hub
and is no more efficient for USB 3 devices - it's still just a USB 2/3.2 hub (it only makes sense because I've also got a DisplayPort monitor connected to it, and
that's only necessary because a quirk with the particular monitor and HDMI) - and even TB4 hubs like that only came along ~2021.
Meanwhile, I think that
part of the problem was that Apple jumped the gun by 5 years or so when they suddenly released the all-USB-C Mac Pro in 2016 - resulting in the #1 USB-C peripheral being the "help! give me my old ports back!" multi-port USB-C hub/dock. Instead of easing in USB-C they tried to force it, and created a pushback.
Then the slightly ridiculous thing is, the one case where USB-C is clearly all-round better for everyone - as a replacement for MicroUSB (particularly the kludgy USB 3 versions thereof) on phones and small peripherals
is the one place Apple didn't use it until very
recently! OK, they had the whole lightning ecosystem to worry about for the iPhone, but the Tragic Mouse/Keyboard and Magic Trackpad weren't for iPhone, and the rechargeable versions weren't released until
after Apple had introduced USB-C on the 12" Macbook (and the new MBP was almost certainly in the pipeline) - they should
never have had Lightning!