I think photos in this case were completely unnecessary and inappropriate. The man is 99 years old and is recovering from a 4 week hospital stay, plus infection and surgery. I think they should have let him leave with dignity, and then perhaps release a photo in a couple days of Philip at home, smiling at the camera and pleased to be home.
The trouble is, this is a great idea, but you might get it only from the Swedish or Danish RF, never from the British. Gosh, think how many people would LOVE to see a photo of the Queen & Duke relaxing together in a week or so, but if it happens -? I would be astonished
Intellectually I know that a bunch of tabloid photographers running after Philip's car and snapping photos of a frail old man is terrible, but since he'll go under wraps for another 3 months (we'll get a formal photo for his birthday), it's only to be expected.