I was one of the people who rejected many of your edits (and approved others). Namely, any edit that consisted solely of removing the word "Thanks" at the bottom got a no. In one case, you'd removed contractions (changed "I'm" to "I am") in order to have the minimum number of characters changed, I assume. It was my opinion that those edits were not good enough to deserve approval.
I did, however, approve edits that had substantive improvements, and was inclined to say yes to edits of truly ugly subject lines where those were the only edits. Subject lines are highly visible.
I was also, admittedly, annoyed by the edit queue having at one point something like 37 items by you that were solely removing the word "Thanks." I looked at all of them, went off to answer some questions, and came back to discover that you'd flooded the edit queue again. My assumption was that you'd searched the site for all instances of the word "Thanks" so you could get some editing-related badge.
In other words, no, I didn't robo-reject (or robo-approve) your edits. I actually think I was generous. :P
P.S. I have two master's degrees, run a local writer's group, and have published short fiction professionally under a pseudonym. I think I'm qualified to judge your edits. :P