Nobody said otherwise. What I said was is that it's not worth the cost and effort. Meaning: there are cheaper and faster ways to achieve the same or better results.
I did not say that "multiple layers do nothing". Multiple coats definitely would do more UV filtering than just one. However, the problem here is that
1. when trying to apply a new layer, you will most likely abrade the existing one, at least partially, just by trying to spread the product, because Reload layers at only sub-micron thickness, which is essentially gone in the moment you touch the paint and swipe something over it
2. Reload will also obviously make it harder to apply any new coats to it, because it will just repel the new spritz of Reload, especially, that it's a water based product; so, after the first layer of Reload any consecutive layers will have more trouble bonding, and leave behind an eve thinner layer, if at all,
3. as with any kind of layering, the structure will only last as long, as the layer at the very the bottom of the "stack" lasts - so, even if you could layer Reload effectively over a period of time, it would degrade as soon as the oldest application layer begins to degrade; so, you'd not get any longevity from it, and your layers would start to break down with the oldest one
4. to apply multiple coats, you'll have to go over the whole car over and over again, which in turn means, that
- 4.a.) with each pass you're increasing the chance of putting new scratches into the paint, as a byproduct of application and wiping, you leaning against the car, etc,
- 4.b.) after a few instances you'll again have put so much effort (time and product) into coating the car with Reload over and over, that under the same time and for the same cost you could have just polished the paint and applied a new coat of a full-blown ceramic coating. Which in turn would layer thicker, would be more pure, and thus also last longer and protect better than even a dozen coats of Reload. Also, it would look indefinitely better, because Reload just will not be able to fill even just superficial swirls, no matter how many times you're applying it. The most it can do in that regard is get rid of holograms.
You seem to like
straw men very much. Or is there any other reason why you keep continually bringing them up? Because I definitely didn't tell you - or even just hint at - that CQuartz Finest "will offer no UV protection" at all, either.
Instead, what I told you was that it's Reload that offers to near non-existent protection. I also told you that it's delusional to think that Finest will not begin to degrade in a year or two (no matter how often you put Reload on it, which might actually speed up the degradation process through the physical impacts and damage that the application of Reload itself does to the paint/coating), and/or to think that it would make more sense from either the effectivity or the results perspective to try to maintain a ceramic coating over 2+ years instead of just re-polishing and re-applying a new ceramic coating in on say a 2-yearly basis. Because they just do not.
In regard of layer thickness, layering and UV protection capabilities (or more the lack of these) Ech2o is at the best the same thing as Reload; but in reality it's even worse (which then again doesn't make much of a difference either). It's primarily just the application method that's different.