I'll be sure to require 16R/34L every time I land in Sydney from now on, even though I'm more than capable of landing on 16L/34R. But it's safer isn't it?
Look I can understand there's times when 16L is not suitable. I've had scenarios like that in my much smaller narrow body, let alone a wide body. Even one night when we had a couple of inop spoilers on the last leg of a long day. The figures said we could have landed 16L, but we chose 16R because of the factors.
But to outright refuse a runway every time when you could have done it with plenty of margin in most scenarios....? Hope you never had to 'require' the long runway in Narita. You would have been met on arrival asking to show your figures.