Yes, quite sure. They implemented an existing protocol called DPP (Device Provisioning Protocol), more commonly branded as "Wi-Fi Easy Connect", that is a part of the 802.11 standard and implemented by more than just Google.

If Apple isn't using that, then it's them who are ignoring the standards and doing their own thing.

It seems like DPP is part of WPA3, which came out in late 2018 and Apple’s version was first introduced in iOS 11, which was released 2017?