Those are definitely not randomized by default, even if operating systems tell them to act as if they are.

And even then, why would that require being on the same network? I can see my wifi router's MAC without being connected to the network, ditto for your phones bluetooth.

Edits because mobile.

https://support.apple.com/en-us/HT211227

The hardware still has a set MAC, and the rest of the hardware whos addresses are being reported may or may not be randomized.