Some comparison screenshots from the video above:
First, altering textures is unavoidably altering the creative vision of the original developers, which means that a game altered in such a way is no longer true to its original, and this in turn has repercussions on the overall aesthetics and the quality of the game; obviously, this goes beyond simple "upscaling" of textures which may retain the original look, but are simply of greater resolution and clarity. However, this particular point can be put aside for now, and we can focus exclusively on what this technology brings us in terms of graphical presentation, or more importantly - in terms of the overall aesthetics.
1. Virtually every single instance of the "RTX ON" "enhanced" scene shows that everything is covered in shades of yellow and brown, and occasionally orange and other similar colours. This yellowish-brown "filter", because it very obviously amounts to being a filter and nothing else, is so intensive, that it drowns every other colour present. Take a look at the first screenshot for instance: without RTX we have grey floor, brownish walls, red and purple table sheet, white (silvery?) cutlery, light green (azure?) candles, brown and white floor carpet, green (leftmost), brown (left) and brown-red (center) wall tapestries, among other things. And what do we have with "RTX ON"? Almost everything is of brown and yellow coulour, with *sometimes* other colours managing to get through (mostly red in the case of floor carpet). This can be seen in all the other instances and scenes as well. Horrendous.
2. The last pair of screenshots, showing a large interior with stairs, looks crispy-clear in the original, whilst the "RTX ON" causes the whole scene to become blurry, foggy and simply messy; in addition to the yellowish-brown filter of course.
So what does this technology *actually* achieves, in terms of aesthetics? Quite simply, it achieves the look of such disgustingly-looking games like the first Gears of War, with everything looking like shit, mud and piss. Not only is the colour palette reduced to a couple of colours, but everything is also blurry. Well, congratulations Nvidia! With the resources of a large, successful corporation, and with all the modern advancements in graphical processing, you've managed to create something that looks worse than a game made 20 years ago. Truly an achievement only a complete imbecile can be proud of, which I have no doubt many of modern-day developers, gamers and others are. Otherwise we would have gotten a few Morrowinds by now, but instead here we are incapable of creating something at least on its level and resorting to pitiful attempts at "enhancing" it, failing miserably as expected.
Final verdict: it is shit.