I’ve not flown the 787 recently, but agree with other posters here about the desirability to enjoy the view. I always arrange a window seat away from the sun depending on route and time of day. I suspect we may be a somewhat select subset of passengers.
Last flew on the 787 about 8 years ago, when in short order I flew Qatar Airways, UK – Doha and return, Oman Air, UK – Muscat – Bangkok and return and KLM somewhere (?!) with no problems controlling the window at any flight stage – things may well have changed since then.