• they also made the chip so it’s not much of a defence

    It’s a pretty old chip though. They shipped it over a year ago and even that was mostly just an upgrade from LPDDR4 to LPDDR5. Which is a substantial upgrade, real world performance wise, but most of the engineering work would’ve been done by whoever makes the memory - not Apple’s own chip design team who presumably were working on something else (I’d guess desktop/laptop chips, and those certainly do have USB-3).

    Apple certainly could have included USB-3 support in those chips… but three years ago there wasn’t any pressing reason to that so and this year they’ve added support for the models with the most expensive camera. And anyone who cares about data transfer speeds will buy the one with the best camera.