The Google Project Zero blog post implies that all Google Pixel models have received a fix, but really only some of them have, and it doesn't mention that the vulnerability can't be mitigated on them either. The 9to5Google post gets both of these things right, though: "the Pixel 6, 6 Pro, and 6a have yet to see that March update" and "Google Pixel devices received software updates in 2021 that automatically enabled VoLTE and removed the toggle."
So, essentially, you have to disable mobile data as well as wifi calling, thus disabling the ability to be called entirely until they release the march patch. Nice..
