User blog comment:Timeoin/Creation Kit Update/@comment-527531-20120202150952/@comment-4660954-20120202184554

The only thing they've added to the Creation Kit is the ability to upload your work to Steam, and I'd wouldn't call that a bad thing. Furthermore, it's optional. It's not like you have to upload your mod to Steam to close the window or something. If you don't like it, don't use it.