Unfortunately, I'm still in the same boat. I deleted and re-uploaded the video, taking great care in thoroughly describing how the video is simply a VLog and is entirely mine. Similarly to your experience, it was almost immediately marked as being disabled for revenue sharing.
This is greatly infuriating, and I still have been waiting for a response from a rep. I sent in another counterclaim pleading for someone to just watch the video; they'll see very quickly that there was no reason for it to be marked in the first place. So, I'm guessing that you're correct and that they have some sort of automatic way of marking a video, but it's definitely not working well, and YouTube should see to it that these cases are reviewed quickly when counterclaims are sent in.
I'll still continue to update this thread in the event that something changes. It's been 4 days since I re-submitted my claim on the video that I had reuploaded, and it still remains unmonetizable (if that's even a word--hah).