It certainly took them a while to introduce MTE! Pixel 8 came out in 2023. I wonder how it compares against hardened_malloc with 48-bit address space and 33-bit ASLR in Graphene. Apple's security team has reported that MIE could break all "known" exploit chains, but so does hardened_malloc. Hard to tell right now which one is best (most def MIE) but everything else included in Graphene is probably making the point moot anyway.