I don't mind usb standards changing as long as they're fully backwards compatible. If it Just Works® I'll have what I always had, but will get better as my gear improves. The connectors piss me off more. I have two different connectors in active use, and potentially could have two more if I brought some of my old stuff out. It's annoying.
IMO the trouble with the connectors is all part and parcel of what appears to me to be a case of 'ready, fire, aim!' (and so part of the reason why we've gone from a new USB standard every ten years to every 2-3). I don't think I've ever seen USB micro and mini A connectors before, but I guess first gen stuff is a learning experience, however the whole business of releasing new connectors for USB 3.0 only to abandon them by USB 3.2 was completely insane, I've also have never seen a USB 3.0 type B in the wild either, and why on earth would we need a chunkier-than 2.0 B but with additional power? B-type is used for devices that have their own mains power, surely 3.0 micro-B sufficed?
Even though I personally dislike USB-C, if USB 2.0 had been superseded by USB 3.1 Gen 2 (+ USB-C) and simply called USB 3.0, it would have been a lot less messy.
The way things are going, I bet that by the time the world settles on USB-C (or has made significant strides towards it), I bet a USB-C mini/micro/whatever connector comes out of the woodwork because why not, along with another several more revised standards.
I shall label my post correctly:
It will be ten years before you see full hardware support for the standard.
USB 3.0 was released in 2008 and within two years I was using boards with USB 3.0. In 2012 I bought my first USB 3.0 HDD. USB-C was released in 2017, and I'm pretty sure we saw USB-C hardware within two years easy.
The only reason I can think of that it would take ten years to see USB4 in the mainstream would be if the industry collectively said, "does anyone really need that though?". One complication though is that USB 4 allegedly does away with the traditional type A connector entirely.