One end of the cable changed but I think the point was that the other end, the part that was built into your laptop, didn't.
I still have a stash of USB-B, mini-USB, and micro-USB cables with the USB-A because I've got a printer, a camera, and devices (Kindle, older battery) that use those ports. I have a USB-C -> USB-A hub. In 5-10 years from now, I might have gone all USB-C.
I still have a stash of USB-B, mini-USB, and micro-USB cables with the USB-A because I've got a printer, a camera, and devices (Kindle, older battery) that use those ports. I have a USB-C -> USB-A hub. In 5-10 years from now, I might have gone all USB-C.