From the preorder page.
* Star names subject to Stardock approval; no vulgar or inappropriate names allowed.
Star name submission will be through www.galciv3.com at a later date.
All game code will be delivered through Steam when available.
*** Oh BTW typo on the website. Should be codes not code.
Small character in a remote part of a single page doesn't normally fall under the definition of "clearly".
Also under the FAQ section there's this question
Q: Will it have any copy protection?
A:No. Unless you consider requiring a user account copy protection (which we do require as it’s necessary to allow users to be able to re-download the entire game and receive updates and support).
Which try to avoid at most to reply to the question. Using Steam means copy protection, it doesn't need interpretation. Steam is needed to download, update and play. If the customer interest was a priority, that would be written here clearly.