And people complain about the new Firefox release cycles. At least they ship improvements to the browser every release, instead of just shipping fast.
Firstly, there are several improvements:
http://chrome.blogspot.com/2011/09/new-stable-release-of-chr...
Secondly, Firefox's new release is the same as Chrome's. Every six weeks, like clockwork. More releases, less big features in each release.
The Chrome release cycle is meant to make sure not only features, but critical updates make it out to users on a timely basis. Every release isn't guaranteed to be feature-packed because that isn't the goal.
Ultimately it's about keeping the project on a steady rhythm of development which sees features and fixes out the door as soon as they're ready.
Don't assume things!
As for the double standard you're claiming, people made a lot of noise when Chrome started the six week release process over a year ago. However, it's died down now that people are used to the release pacing. Firefox just started their rapid releases, so I'd expect any negative commentary to trail off in the same way.