We have only discussed about Rollback flag, so it shouldn't have any additional flags.

Some auto-translated articles are created by foreigners who often write about their villages, local celebrities and so on. I'm not sure about the spike you mentioned, but it's likely that a significant part of the articles were written by users who don't speak Lithuanian. Also, I'm under the impression that many auto-translated articles are written by children or teenagers who just play with the UI and don't have any interest in sticking around and actually learning something.