termina wrote:
What do you think of their argument?

He needs to read Douglas Adams's "Parable of the Puddle".

Does the author know what he is talking about?

No.

Just for fun, let's even pretend that planets don't inherit the orbits from their respective star systems.

With there being 10^24 stars in the observable universe alone, I wouldn't be surprised if there weren't a couple planets that fell into just the right place, unless the probability of any of the planets orbiting a star falling into a stable orbit is less than 1/10000000000000000000000000.

Creationists tend to forget that our galaxy is not the only one of its kind. There are probably more than 100 billion galaxies. In fact, when they do their fine tuning "calculations", I can't think of any individual who factored in any objects beyond our own galaxy. Besides, it doesn't matter because the laws of physics and chemistry explicitly predict that solar systems like ours will end up forming.

I think this case is closed.

One could also consider the asteroid field in The Empire Strikes Back and ask oneself how long it could actually last in the state in which George Lucas depicted it.

A slightly different angle, but a good vid nonetheless: