I’ll chime in that my predictions 2 years ago remained correct - they went away from the “Everything modular” approach to a “smart phone with a bunch of USB connectors for accessories”.
It’s more logical than trying to interconnect the deeply complex inner workings, but makes it easier to enable things like a modular camera, sensors, or batteries like they’ve chosen to do.
It’s still an interesting project, but people have already created smartphone platforms in less “modular” ways (see iPhone credit card readers, barcode scanners, snap on DSLR lenses, etc) so now it’s really more about the packaging than the technology.