But this is more like not including tops with your to go drinks when every one throws them away. If Android never used MTE, removing doesn’t harm the Android experience which is what the Pixel is intended to run.
The field is certainly moving in the opposite direction. Apple has their own extension of MTE (MIE) and uses it in the kernel and a bunch of system processor. Samsung has had MTE support in flagship Exynos for some years now and they started experimenting with MTE in the OneUI 9 betas (not sure what the MTE status in the final release is).