Are you implying that Google is unable to distinguish whether a screenshot is triggered via a combination of hardware buttons vs via a software call from another app that isn't even on the foreground in their own ecosystem? That's a quite sad state of affairs, isn't it?
I've been unimpressed with Google's commitment to making the fundamentals of Android great. They seem to prefer doing the minimum required there and putting all their efforts into something more sexy, like generating fake photos that look like they were taken with a 2400mm lens.
I don't want my phone to generate fake photos; I do want it to always let me manually take screenshots, but require turning on a permission that's a little awkward to find to allow an app to do so.
When you don’t control the hardware a lot is off the table.
This is a fine excuse for most everyone, but not Google. They can control the hardware significantly and in some cases like pixel, completely.
They no longer believe in owner control. Either that or they consider themselves the device owner, which is even worse IMHO
Sounds like a marketing opportunity to sell more Pixels and get closer to their current dream of becoming Apple