I am assuming, based upon the above discussion and youtube test video linked here, that LCD and LCOS chips are similar in chemical composition and therefore have similar degradation over time and use.
In any case, what is being described is what I have observed in my projected image.
The idea that Sony or any other major manufacturer would hide the defects in their product, after possibly engineering them into the product, disturbs.
If there is any one business principle that destroyed American preeminence in manufacturing, it's "planned obsolescence". I have already had one Sony product crash and burn. If this expensive purchase turns out to be another, it will be hard for me to buy another Sony product..
No I am not fooled by the gradual nature of the image degradation, such that I will be amazed at the brightness and clarity of new Sony products. I remember how good the image was, I feel somewhat scammed by this unreported, hidden flaw in the product..
I further do not like not being able to replace the chips