In fairness, there are two bots which do a plagiarism check: Cheetah and Steemcleaners.
I know that the Curie guild also checks for plagiarism before upvoting anything submitted their direction for consideration.
There are also some individuals on Steemit who verify things are not plagiarized, I know @pfunk is one of them.
From my own experience, plagiarism is one thing the community takes very seriously, so I would have to say that may be an unfair accusation. Quality of the post is a subjective assessment. Do I like all the content which earns top dollar? No. However, they have invested time and energy building their following and those individuals do find value in the content they have created. If anything, I would suggest taking that page from their playbook.
Thanks for clarifying on the plagiarism aspect. But content that goes on and on an on and it has like so many upvotes just doesn't make sense to me. Nothing against them for posting such long content but seems to be lacking that punch which can explain the whole scenario in just a few paragraphs. But yeah definitely something to learn from their playbook on how to get so many followers.