[untamed]

Yes, that is mostly true...but you have give some thought to adding the fish.

Putting your new LR into a holding tank with water movement, temperature and lighting is essentially just like putting it into an aquarium. You'll get some die off of things which should generate a cycle and create a bacterial population that you need. Once completed, you can transfer this rock into your new tank and you should not experience much of a cycle.

The key is that the bacterial population that you will create will be based on the "load" that your rock experiences while it is in your holding tank. That load doesn't have any fish or food being added. Don't assume that this means that the rock will be able to suddenly absorb the increased load associated with a bunch of fish all at once.

In other words, yes you can avoid a cycle by curing your rock in this way..but you will still need to add fish SLOWLY to build the system's bacterial population to match your fish load. Too many fish, too quickly and you'll still create a cycle that can kill the fish.