That a book like this would be badly written almost goes without saying.

It may even have been badly written at the source.

As others have pointed out, this is more about writing well or badly.

I stand by my opinion that it's just badly written.

Unfortunately, the article is badly written and this isn't true.

He published his own newspaper, but it was very badly written.

Unfortunately, some badly written software - especially games - failed to run with 2.

Each to their own, as always, although how either of those shows can be considered predictable or written badly is just bizarre!

We would, of course, expect people to judge that the passages in which there was a conflict were badly written.

I like an interesting debate and discussion but there's only so much you can say about some badly written prose.