I was almost thrown off a plane for refusing to lower my window shade at 3:00 in the afternoon on a Cathay flight out of Adelaide. I chose a window seat specifically so I can see the scenery. However the staff asked me to close the shade and when I politely refused I was abused by other passengers. Is this the new norm ? feed the passengers then expect them to sleep, when it's still daylight?
I'd agree with you on this and I believe that it's well within your rights to leave the window shade open, if you enjoy the view.
Personally, I'd like to close the shades as soon as I'm allowed to do so on a daylight flight. For me, it's just either too bright or the seat gets too hot, personal preference, nothing more. And if I'm in the aisle or middle and the person on the window seat preferred to have the blinds up, I'm ok with it too.
And for those passengers whose sleep is interrupted, they might use an eye shade to shut the light.
Having a passenger close a window shade because other passenger can't sleep is akin to moving houses because of bed bugs. Change the bed, not the house

I took reference from an old adage in Tamil language, apologies if I didn't say it right
However, on abuse by other passengers : what was the abuse ? and was the FA quiet when the abuse happened?
Re glare in J/F : Have had this issue before, but in most cases, I sleep with the blanket covering my face, so limited discomfort
Re glare on IFE screens : have to agree, open blinds do leave a glare on the IFE in Y. One option to fix it would be to increase the brightness or contrast or one of those display options. Also, I guess the newer aircraft Y IFE's are somehow designed to be work fine even in a glare situation ? Had a Y flight from SYD-SIN earlier this month in Y where blinds were open but didn't have any problem viewing the IFE
Re the anti-glare thingy on 787 : loved it

recent overnight flight from HKG-SYD. As the flight was approaching AUS, the sun was up and because of the blue anti glare, there was no (very limited) sun light in the cabin and the sun shone as a well defined blue dot when viewed through the window. When I woke up from my sleep, I first thought it was a flight next to us

and later I realized "Silly, Ade, it's the sun

"