Think about it. What do you want to cycle. The water? Or the living organism in the liverock. Why else do you think we can do a 50% water change, but not a 50% liverock change.
And what is the point of cycling?
To get rid of the die off because organisms died inside the liverock during transit. Somewhere somebody took the rock out of water and you do not know when, where and how long. So the ammonia spike is those organism that died that is breaking up. And then other organisms starts that eat the dead stuff, until the dead stuff are all gone and they again starve to death, second cycle. And so it continues until eventually it balances out.
OK, another view, the ammonia in the water is also causing other organisms to die. So YES a water change will bring the ammonia level down, and ensure other organisms do not die because of ammonia poisoning. But this is only really needed if the ammonia and nitrates levels are abnormally high. And these organisms will actually eventually also die when they run out of food. So why prolong the process.
So let the ammonia and nitrates spike, come down, go up on second cycle and so forth until it eventually settles. And it only settles when we have the lowest order organisms, some that eat them, and some higher order. So that we at least have the beginnings of a food chain.
Think about this statement. A complete new tank with no life in it, or any traces that there was life in it. It is completely sterile. Boiled in the kettle stuff. Completely filtered. There is no ammonia or nitrates either. So do we have a cycled tank? No ways!!! First fish that poop, and there is nothing to eat that poop.
Another point. And here I did not receive any good answer myself. So please, guru, help me out. Must we feed an empty tank that is cycling some flake food?
In my opinion, yes, we must. From about week 3. Else how will we ever get the cycle balanced. If there is no food, the organisms die, causing another cycle. So we must ensure that there is just enough to keep the organisms healthy and to ensure higher order organisms can evolve and survive.