120 makes a difference once you’ve used it much in same way as OLED over LCD. Or decent 5G over LTE or 4K over 1080. Once you’ve seen it you adjust to it and then everything lower seems off.
The same people saying 60 is enough are the same ones that said OLED isn’t necessary when apple didn’t used OLED but changed their minds when the X came out.
Can't agree to this at all. Never hear of diminishing marginal benefit? According to your statement, we can never be satisfied, even with 6G, 7G, 8G... or 8K, 16K, 32K... which is nonsense. LTE is absolutely fast enough for standard smartphone and tablet use. There is no need to stream QHD or 4K material on such tiny screens. It just consumes server, streaming and power resources, while the additional benefit compared to 1080p is miniscule. 5G as substitute for a missing landline, or for IoT in general, yes, that's fine. But I would never waste extra money and battery for a 5G smartphone contract, if LTE coverage is more than good enough. Maybe in 3-4 years, as new de-facto standard but certainly not right now.
Same for image and video resolution.
Good quality 1080p is still fine enough, even on larger screens, Game of Thrones is the perfect example for that. Together with 4K it's an ideal consumer standard. I don't get why first people are falling to the 8K marketing bs? The jump from SD to HD was massive, the jump from HD to 4K significant, but from 4K to 8K and even beyond? People know that their eyes have a limit somewhere? That the demand for resources, power and data consumption rises exponentially with every further increase of resolution, the additional benefit however decreases dramatically? I can certainly state that 1080p film material seems everything than "off".
And for the refresh rate - I have an iPad Pro 10.5" so I use 120Hz daily and I can compare. Do I miss it on my Macbook? Maybe a bit (not for gaming or movies though). On my tiny smartphone screen? Not at all. You don't scroll through texts and webpages on it for hours. I rather keep 60Hz but a solid battery life here. If they want to implement it (and they sure will on the iPhone 13), fine for me, but again, 60Hz still is enough for the huge majority of consumers, just like with FHD/4K and LTE.