50% of comments: what horrible QA, don't they test anything?

Other 50% of comments: why is the patch taking so long!

Rushing a patch and possibly breaking something further is worse than just having the bug you have out now.

As a former intern, usual Google practice is to rollback rather than attempt to fix with non-client apps, in order to take a more measured approach to the issue and not accidentally break something with a hasty fix. Android is in a different position as rollbacks aren't possible, but my guess is the release managers would take a similar view to not rushing.