Nah, I only PM mods if it is absolutely and truly necessary and, besides, I explained why the OP should be banned and the thread locked when I reported the OPs of these threads.. In fact, I've reported the OPs multiple times with a similar explanation given just in case different mods attended to each report.
What is so frustrating is that it is so blatantly obvious that the conversations occurring in these threads are endlessly recycled and often nonsensical, even if they no longer qualify as plagiarism, per se. The smart thing to do - and one requiring the least amount of time/effort by the mods - would be to lock the thread and ban the OP (or at least just lock the thread). The worst that could happen is the OP creates a new account to complain in meta which would basically result in a lot more people looking at their misdeeds and concluding the banishment/thread-locking was righteous and just.
Meh... not anything I can do about it except not bang my head against this proverbial wall.