Regarding this video at
https://youtu.be/L3LWXznJx_0?t=167
Is the generic LED really supposed to look that washed out? Is it because of the camera being set to sunny - would it look better on a different setting? Or is it just because the image on the right looks much better, so the one on the left seems worse than it would actually look by itself?
Again, this is purely subjective, also I'm not an expert in this matter, just share what I've experienced, think and "feel" regarding this topic.
The screen comparisons you pointed out above actually doesn't reflect what I've experienced, at least to my eyes.
Here the original, to be honest, the left side is actually very pale, abit darker and also less saturated. May be they deliberately made it worst and to make the right one stands out, not sure though.
Now, using above image, I modified the left side with more saturation and light up abit on the brightness that I think and "feel" its more realistic and fair comparison between ordinary led and high CRI light source. Remember, this is purely subjective, just trying to show what I've experienced thru my eyes.
Now, regarding lighting up with Yuji leds, the obvious one is the skin tone, no argument about that. But what I want to point out is other details. Pointed out with arrows, 1st look at his tshirt, the left side is like greenish brown like military camo tshirt, while the right one is clearly brown, my brown coloured stuff also look real brown. Also the white wall at the background, my wall is white, thats what I see when using Yuji bulb I bought. Also the most part that I like is the wooden stuff, watch closely the wooden frame hanging at the wall, my house has wooden furniture, they really light out and looks really nice.
As above mentioned by other poster, actually our eyes will gradually adapt and sort of accept white even they're not perfect. Here another example from that video, I did increase the brightness and add abit of saturation to make it fair comparison with below example. Just look at this photo for a while, don't scroll down yet, stop at this photo only for few minutes, my eyes are gradually accept its good enough white. Until ....
.... when I saw the scene like this one. The difference is too much to ignore. Let alone the skin tone, just look at the wooden furniture and the white wall compared to above photo.
The key to see and feel the "huge" difference is to have two sources in hand so you can compare, like Psi's plan, to have old led as comparison to see the difference once the new one is installed.
All I can say is you need to see it "AND COMPARE" to appreciate it, especially at the places/corners in your house that you already used to see them for years using low CRI light source all this time.
Hope this helps.