I'm completely with HinFrance.
On a Cyprus trip earlier this year I used my partner’s camera with articulated screen. In the fierce sun and constant clear blue sky I found that reflections made it extremely difficult to read the screen – even to compose, let alone focus. Using the articulated screen at waste level with my back to the sun improved screen clarity but, of course, resulted in fairly flat images and the polarising filter was ineffective. Shooting with the sun to my left or right required various contortions to provide shade (my partner was not happy to be used as a sun shade*). Perhaps indoors or under an overcast sky I might have had more success, but not there. Call me old-fashioned but I am happy using an optical viewfinder – and aren’t problems with manual focussing more due to the short focus ring movement of modern lenses? I have no trouble at all manually focussing with my Nikon AIs lenses.
* She can never understand why I spend time on composition and gets quite impatient. She simply points the camera in the direction of view and quickly shoots without worrying about the screen - and is nearly always happy with her photos as a record of where we have been