I actually think the best is to have your big eye capturing screenshot and then to have a very detailed close up shot so you can actually see what’s going on and what you might actually see with the naked eye when using the preset. Also to use standard camera settings (ISO 200, 6500K, 1/60 aperture speed) as it’s difficult to know what is the camera clipping highlights and what is a preset with bloom say.
Personally I’d like to always see a comparison shot with an actual CRT but then again a lot of shaders are artistic impressions (I suppose aren’t they all to varying degrees) which a lot of people prefer so I wouldn’t go hard-line on that.
I think the photos you posted above are the closest to what I’d like to see people shift to but are still a little too far out IMO as they hide details that you see when actually viewing the shaders.
I also think we should take a leaf out of retrogamingboards 240p forum where people embrace the beauty of the phosphors (or pixels in our case):
Here’s a good example from @oscartilheiro: