There’s more than one type of binge writing. Not all are bad. When you are forced to find chunks of time in a busy day, binge writing in the form of speed writing can be a way to get a lot done. Some binge writers only have one reasonable chunk of time per day when they can write. Binge writing also goes well as a complement to regular daily writing.
The bad kind of binge writing is trying to get a big pile of writing done in one day or on vacation because you aren’t writing at all on other days. That’s like having one huge meal a week instead of the normal three meals a day. Saving your writing for a binge writing session is a way to guarantee you won’t enjoy it.
There are several reasons binge writing works against productive writing.