[dfox]

Bear in mind that SD Express is SD only in name and otherwise it is just an NVMe in SD form-factor. And how much UHS-II is still an SD is somewhat questionable.

[vardump]

True. But on the other hand similar to how for example USB standard has developed from USB 1.0 to USB 4.

While it would technically be correct, no one says new USB standard X is USB in name only.

Perhaps every data transfer interface standard eventually adopts a PCI-e lane. :-)