I think the issue to those breathing the rarified air of the Fine Art World, is the number of degrees of separation they perceive in photography from the hand of the artist to a finished print.
In their minds it goes, painters intent, hand, brush, paint, canvas, whereas a photograph goes through photographers intent, camera & lens (photomechanical engineer), film emulsion (sensitometrist), developer (photochemical engineer), enlarger & lens (photomechanical engineer) paper emulsion (sensitometrist) developer/toner (photochemical engineer).
This is a cultural perception which makes no sense, because pianos also remove ones hands from the strings through levers and hammers. In other words, pianos are machines, yet have they the blessing/acceptance in The Art World. The only difference between photographers and pianists is that pianos modulate/control sound and cameras modulate/control light.