Well I wouldn't say the 25 approach isn't used that much. The last two times I have come into Palmy I have flown the 25 approach and we were arriving from Sydney and Brisbane. Freedom SOPs forbid circling approaches at night so we can't just do the 07 approach and then stooge downwind for 25.
To pick the reporter on semantics, the captain didn't say it was unsafe merely less safe. There is a difference.
I don't want this to sound conceited but once you have flown something the size of a 737 you would understand where the captain is coming from. I am sure it can be done, just more stressful. Do you want that when you are coming down the slope at 1am?