[Quoth]

Of course USB 3.x is better than USB 2.x which is better than USB 1.x, but it's irrelevant to the point I'm trying to make.

My original point is about the type of physical connector doesn't tell you the speed, though obviously the blue USB-A for USB 3.x, the USB-B with a top deck (USB 3.x and backward compatible) and the elongated micro-USB (USB 3.x and backward compatible) suggests USB 3.x and faster speed. But a USB-C connector on its own tells you nothing about the speed.

That is irrelevant to the USB-C on newer Kobo ereaders, many phones, Tablets and some other ereaders. They simply have a USB-C rather than micro-USB and the Sage being faster than a Libra 2 or micro-USB Libra is simply because the eReader is faster. Even Apple will have to put USB-C on their phones to sell them in EU. The EU isn't saying it must be a full spec USB-C with Video and USB 3.x speed. They are only mandating the connector.

Not once did I complain about EU mandate, nor claim there was no point to USB 3.0.

For the last time, ordinary stuff has USB-C now rather than micro-USB because (A) it's the latest thing, (B) The EU says so to sell in the EU. Some newer Kobo ereaders are faster because they are faster. They'd be just as fast with any kind of USB connector, not because they have USB-C.