Thank you for volunteering to collaborate with other transcribers on difficult pages! You are an excellent resource for those with less experience.
From what I can tell, each transcriber may assume a different standard for "completed". When a fellow user resubmits a page it is not necessarily counter-productive but a continuation of the transcription and review process. Your comment is great reminder not to strive for perfection, but to move along pages with a sufficient transcription in place.