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I agree with your statements and the reverts. I would like to add some different thoughts.
I prefer incremental addition of material, because it ensures a proper peer-review process. Adding 60kb on a single day is just too much to control. 
The sudden addition of long paragraphs also raises the question where this material comes from. Of course, the editor might be extremely gifted and produce an unbelievable amount of information in almost no time. But suspicions that the material is copy-pasted are not too far fetched, I think. Especially, when seeing that the style differs drastically between different section (e.g., the way references are coded). I would appreciate, if you (User:Historian19) could enlighten us about this question.
Another thing I would appreciate are WP:edit summaries. Thanks.  T C "