I don't think just cost cutting is googles motives alone.
Notebookcheck
Leaked documents show Google planned and then cut a key Pixel 11 security feature for GrapheneOS
GrapheneOS says it will not support Google’s Pixel 11 because the Tensor G6 chip lacks Memory Tagging Extension (MTE), a hardware security feature central to the privacy-focused operating system. Bootloader analysis and leaked Google documents suggest MTE was deliberately removed, prompting GrapheneOS to recommend older Pixels while exploring support for a forthcoming Motorola flagship.
I had an aneurysm trying to read this title
AI slop
But would have make more sense to just turn it off. Here they removed it completely.
*cost cutting
According to article, the reason is that they can’t make their memory writing as fast as other memory chips that have MTE (for example apple’s).
Yea more overhead with secure chips. But they can do it ofc, they have done it so far. They choose not to, and in last minute without any heads up.