Have had this issue myself asking with other DD card related issues.

I can’t understand why the pi foundation persist with using SD as the only physically practical storage option.

They’re looking post the point of needing a way to snap on reliable EMMC storage, as a default, in a way that doesn’t leave a cable or something permanently plugged into a USB port.

Sure, USB is a fine option, but I hate that it’s only an option and not a designed default.

Most of us only need 8GB or so for the OS, 8GB or good quality durable EMMC should hardly cost anything.

Other tiny computers and even economy notebooks and Chromebooks already use this.