1505
All the other brands went along
(slrpnk.net)
This is a most excellent place for technology news and articles.
USB-C keyboards & mice have been around for years. I switched to USB-C almost half a decade ago and haven't looked back.
Regardless, you can easily mod your existing gear to USB-C with just a screwdriver and a soldering gun (or electrical tape if you're lazy like me).
So your solution is for people to either throw away perfectly-good products (Logitech mice still don't have USB-C receivers btw), or learn to hack something together?
My laptop from 2018 ago is no thicker than a modern laptop and managed to have 2 USB-A, 2 USB-C, a power adapter port (though it also supports PD), an SD card reader, and a headphone jack.
Now that PD is a better standard and power bricks had no standard, I can see dropping the power port for another Type-C port for a lower-power laptop that can't draw more power than PD can deliver, but there's no justification for dropping the other ports that are "still" standards being used by new devices.