Hey man, thanks for the kind words. Sucks to have to flag minnows for plagiarizing hard work from people like yourself and at Disobedient Media.
I think the reason why these posts were not detected by was because of the rewording you showed here in your post. I can't say 100% for certain but it would appear that the word substitutions were done to avoid detection.
From your own investigation, it looks like much of it is done using the mobile app. which is interesting.
I know a lot of these accounts originate from developing countries where earning $2 STEEM a week from a post can make a huge impact on people's lives. It's just very unfortunate that they're choosing to copy and paste other people's work in order to earn.
I originally became suspicious of some posts because they used the #deepdives tag but were not geared towards our current challenge. I'm hearing that this type of abuse is quite common across the platform with other tags as well. Certainly feels like a never ending game of whack-a-mole at times.
Cheers!
RE: Plagiarism on Steemit: @messwir - Why You Shouldn’t Plagiarize