In the current circumstances, the best course of action is to stop work on the eleventh iteration of the Pixel. If Google does not rectify the situation quickly, returning the devices will prevent financial loss, although disappointment due to the absence of the MTE will still be inevitable.
This situation should be viewed as an opportunity:
This frees up some of the team's developers to focus on other projects for months. For instance, they could work on Motorola smartphones, improvements to the operating system and apps, or another type of device.