Earlier quoted context omitted.
Niche? One for the keyboard, one for the mouse. That's a normal computer, if you believe wires are better than Bluetooth.
We're talking about a laptop. What's the point of a laptop if you're just going to make it into an underpowered desktop? And it's not like mouses and keyboards need a 4Gbps connection to the host. Plug them into a tiny hub. You're already lugging a keyboard and mouse around, why not a hub too?
But I agree regarding ports - at home my mouse and keyboard are plugged into a cheap KVM switch, so I still need only one USB port on the laptop; If I needed to lug them with me I'd certainly just bring a hub too.