how do you know the issue was criticism?
it looks like an automated response.
maybe it's just to avoid some sort of conflict of interests or keeping authors at arms length (so as not to let an author say 'this is an amazon book' or something).

i see the athor already got a response that there was a mistake.

This is almost certainly because CreateSpace is in California. While they are a subsidiary, Amazon is very careful to maintain a clear separation between Amazon and CreateSpace to avoid the requirement to collect sales tax on items sold in California. For the same reason, there are very strict guidelines on where Amazon's logo can appear on the CreateSpace website and what verbiage they use to describe the relationship to Amazon, CreateSpace employees are not allowed to have @amazon.com email addresses if they work out of California, etc. It sounds shady and lawyer-y but its pretty standard for situations like this. I don't know why this merited a mention on the Stranger.