Newbie Question

[Menschenfresser]

SJ, just reminded me of something that has been determining my selection on homeplanet conditions.

Don't those who pick rock have a slight advantage given the fact that all (as far as I know) moons are rock. Granted this is an advantage that could be lost by the middle of the game, but starting at low tech with only one planet, before someone has the tech or research points to acquire rock colony quite a few decades can pass.

This really isn't a complaint on how things are (however I think realism could allow for ice moons); I'm just wonder if any of you think this gives much of an advantage.