For consistency, given all the phones GrapheneOS refused to support for not meeting their requirements, the Pixel 11 should not be supported, to my eyes.
It does suck for those who already got one expecting GrapheneOS support
Pixel 11 does meet our past requirements and is more secure than the Pixel 6 and Pixel 7 which are still supported. Other devices don't meet the past requirements.
We don't want to have an overall downgrade in security from the Pixel 8, Pixel 9 and Pixel 10. One approach would be using HWASan within the OS instead of MTE but the overhead is extreme and it only works for code instrumented with it.
It does suck for those who already got one expecting GrapheneOS support