A quick look on somewhere like Amazon shows that many mice still come with USB-A wireless receivers or, at least, a bundled A-to-C adapter... Since mice rarely need more than USB 1 speeds you'll lose nothing by connecting them via a USB-A port. I've got a bunch of Logitech unifying receivers & spare keyboards/mice that work with them - they never did a compatible USB-C version of that, which is probably why people are still buying "new-old-model" MX Master 2s mice.
Most audio interfaces, too, only use USB 2 speed and will work just as well from a USB A port.
There are also mundane things, like I've got a couple of extra-long USB-A cables, one with a right-angle B-connector that suits a particular device etc. My flatbed scanner is 20+ years old, works perfectly & I have no cause to upgrade it until it dies.
For a large number of low/mid-end peripherals that only use USB 1,2 or 3 speeds, USB-C still offers absolutely zero performance advantage over USB A, which is why some of us haven't been falling over ourselves to "crossgrade" to USB-C.
Hubs/docks still have USB-A ports because they are useful to many people, are cheap to implement and can still be used, via adapters, with many low/medium end USB-C peripherals. You're not being "robbed" of full-featured USB-C/TB/Power delivery ports - hubs only have 3x downstream TB4/5 because thats how many the chipset supports, and any extra USB-C ports would have limited power delivery and no video support anyway.
If you don't need the USB-A ports, stick low-profile USB-C adapters in them and nothing of value will have been lost.
I genuinely do not care if you are still running museum hardware from 2007. If that works for you, great. Go on Amazon, buy a cheap plastic hub for 30 bucks, and plug in your relics. Nobody is stopping you.
But do not pretend that people buying a 500 dollar professional dock are doing it to support legacy junk drawers.
Professionals are not building serious workflows around right-angle USB-B cables and 20 year old scanners. And even if they were, there are USB-C cables for almost everything now. If not, adapters exist. They cost a few dollars. Problem solved.
What I do not understand is why the rest of us should be forced to carry around dead weight ports just because some people refuse to move forward.
It is 2026.
US-C is not new. It is not experimental. It is the global standard. Laptops have moved on. Phones have moved on. Tablets have moved on. Cameras, SSDs, audio gear, everything serious has moved on.
If you still need USB-A, fine. Use an adapter. The irony is you are arguing against adapters while defending a permanent adapter bolted into the side of a 500 dollar device.
I run a MacBook Pro with no USB-A ports. Zero. And guess what. The world did not collapse. If I absolutely need to connect something ancient, I use a small adapter. That is how transitions work.
The real issue is choice.
There are endless hubs with USB-A. Endless. But if someone wants a clean, modern, USB-C only hub, suddenly the options disappear. That is the frustration.
No one is trying to take your old cables away. Keep them. Frame them. Build a shrine to them if you want.
Just do not demand that high end modern hardware keeps dragging legacy ports forever because you are emotionally attached to USB-A.
Technology moves forward. Either move with it or accept you are choosing to stay behind.