There's some positive news from the GrapheneOS devs on Pixel 11 in the past week that's worth reading up on. The MTE hardware feature is still there, they're just not sure why Google disabled it
They said:
> It isn't clear if there are serious CPU errata or it simply performs very badly.
Meaning it's there but not terribly functional. They also said it's unreliable.
I am well-aware, closely following them on Mastodon. That's why I said may have hampered. There may be some CPU errata that posed them to disable it.