I first did tilt-shift photography as a teenager before I even knew what it was called, when I inherited a crown graphic from my grandfather, and I noted that I could change the plane of the lens, and could see on the ground glass viewfinder what the effect was. Had great fun running around Italy with a backpack full of Polaroids and a far more precious supply of 4x5 colour positives, taking architectural photographs. Had less fun developing them all at home later - the colour positive process is not easy.
I’ve since tried tilt shift with my DSLR but it just ain’t the same - it gives good enough results, but not much that you can’t do in post - whereas looking at some of the prints from the crown graphic, the quality and the… I don’t know, quality… of the images is different - better.
I guess my view is that it’s worthwhile with wet photography, but not with digital.