> That's the job of the GPU driver, mostly.
I think you have to reason this one out. Your statement, to me, doesn’t hold water.
Let’s start with HDR. That requires the content that’s being rendered to have higher bit depth. Not all of this is stored in GPU memory at once, a lot is stored in system RAM and shuffled in and out.
Now take fluid animations. The interpolation of positions isn’t done solely on the GPU. It’s coordinated by the CPU. I don’t think this one necessarily adds ram usage but I think your comment is incorrect.
And lastly with resolutions, the GPU is only responsible for the processing and output. You still need high resolution data going in. This is easily observed by viewing any low resolution image. It will be heavily blurred or pixelated on a high resolution screen. That stands to reason that the OS needs to have high enough resolution assets to accommodate high resolution screens. Now these aren’t all stored on disc necessarily as high resolution graphics but they have to be stored in memory as such.
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As to the rest of your points, they basically boil down to: I don’t want it so I don’t see why a default install should have it. Other people do want a highly feature full browser that can keep up with the modern web. And given that webviews are a huge part of application rendering today, the browser actively contributes to memory usage.