Of course you can use the modules on any other brand of laptop. It's not going to look pretty doing it, but I've routinely used the USB-C to USB-A, as well as the mini SSD, on a MacBook Pro.

Colleagues borrow them all the time when they need a SD card or MicroSD card reader. Is it as pretty as a dedicated reader for those cards? No, but it does the job.

Saying they're proprietary is misleading a bit. The form factor makes it awkward to use elsewhere but they work just fine anywhere you plug them into.

It is not mechanically fit for purpose.

You can likewise put 26" rims on a Ford Fiesta but it will look and function equally poorly.