Silver lining - less pixels to push, batteries last longer. Less pixels to push, A12 chip will be less stressed and get things done much faster.
TBH, I think OLED or 4k screens on a phone is overkill, it’s a phone, I only look on forums like this, email, Facebook and Instagram on it. Most of the time it is spent with screen off in my pocket so personally I am not so bothered with the screen seeing it is £300 less than the Xs. Sure, I’d like the best screen, ultra high res but on the grand scheme of things…I am okay with it.
Also the A11 last year already blows away the flagship Android, The A12 is even faster, this will be a powerhouse of a phone.