We are always moving forward with our technologies. Processors for TV, Audio and other electronics are also no exception. Every year SONY introduce a new processor creating a hype saying " Never before picture processing, motion handling, up-scaling capabilities, audio quality (Now a days, we can even get Dolby Atmos through a Television set only). These are just marketing strategy for an introduction to the new product line up. Yes, there is definite improvement of everything they promise, but question is "How much". XR processor is 5% better performing than X1 Ultimate, then X1 Extreme and so as the rest. Obviously the cost of premium taken from us, goes to their research and development.
It's us, the end users who always demand for the best, all the time. It's their answer to our greedy needs. Suppose if anyone purchased a Top of the line TV in 2016, can still be happy using that particular set. But to cope up with the current trend, he/she have to have a 2021 TV with fancy specifications.
Last to last year TVs with X1 processor is still good enough for normal users for another 3-4 years(if not more). For an example - A 65 inch X950G(2019) with X1 ultimate processor is under 1.5 lakhs, here in Indian market. What I feel if you can get a 2 years old flagship world wide TV in reasonable price, it's worth the purchase. Why should we bother about what Sony is offering in 2021 in twice the price. Or if Money is itching to get out of your wallet for that 5% more performance, then definitely go and have it.
Usually majority of us purchase TV, expecting a good 10 years of satisfactory lifespan... right??
Disclaimer: Above is just my opinion.