Pixel 11 has an incremental upgrade to the CPU, the same underpowered GPU and less RAM for the base Pro models. It has a new major version of the secure element (Titan M3) which likely greatly improves Before First Unlock state security for users without a strong passphrase. It has a better radio from a performance and efficiency perspective but it's still a more than yearly generation behind Qualcomm. The cellular radio firmware is also likely a security downgrade but the userspace code is more secure due to moving to AOSP IMS code. If these devices hadn't removed MTE, then they would have been a sidegrade with marginally better security. Removing MTE ruins these devices for GrapheneOS. We could still support the Pixel 11 series but it would be greatly rolling back overall security to before the Pixel 8. It does at least have PAC and BTI but MTE was the main improvement with the Pixel 8 rather than those.

They have their reasons. Pixels are only getting worse and worse after the 9