I suppose this means that supporting future Pixel devices will be more difficult? If someone has the ear of anyone at Google, especially someone who works with Android, please share this cause with them!

The comment above was describing in great detail how this is not the case and after some initial effort should prove no difference at all.

Generic power-user here: I am going to guess without the backing of Google going forcefully open-source, "niche" hardware such as Google's Tensor will lose their attractiveness.

However one must note also that for now not even Snapdragon fulfills GOS requirements. If/when that changes, Snapdragon devices may have more open-source community momentum than Google's Tensor. Plus all the economy of scale, etc..

In terms of security, Microtek is even more far behind Snapdragon.

Again, not an Android dev here, take the text above with a grain of salt, YMMV, etc..