Right, so sRGB should really just be the only allowed profile for images. That's my whole argument. There should be some standard profile all images should use,

Right, so sRGB should really just be the only allowed profile for images. That's my whole argument. There should be some standard profile all images should use, and then displays should deal with the work of converting things to a suitable display profile. Allowing more than one image-level profile just makes things way more complex for no perceivable benefit.