I understand what you mean, but with all due respect, I don't quite agree. My decision to flag remains (switching from -100% to -99% is acceptable by me but I don't bother).
I actually find a source to back up my claim.

copying so many words or ideas from a source that it makes up the majority of your work, whether you give credit or not

the source is here
http://www.plagiarism.org/plagiarism-101/what-is-plagiarism/
But thank you for spending time to comment and looking out for the photography community.