You’re right: it doesn’t identify the device type, so the title is misleading.

The intended point is that device type is often the wrong thing to detect: a touchscreen laptop may expose both coarse and fine pointers, while a tablet may be connected to a mouse or trackpad. The snippet detects available input capabilities instead, which is usually what the interface should respond to.

I wasn’t particularly careful with the titles, but this one should be "Detect input capabilities". Thanks for the heads-up!