I'd say it depends. When there was a NaNoWriMo site, there were several there that put a specific word where they needed to fix descriptions and stuff later. One put XXXX, just so it could be easily searched for without false positives. Another used ELEPHANT for a story that didn't have any elephants, which led to some hilarity.
My early novels had a tendency to read more like scripts, and I'm still doing one round of editing to make sure I have enough description. If you keep in mind that stuff can be fixed with revision and editing, it doesn't matter if the first draft is just you figuring out your story and interactions. It doesn't need to be perfect.
Icy cold over here. Needed to get the winter boots out of the closet. Definitely November.