Also worth noting that the "automation" was a spell checker, which presumably flagged examples that aren't considered properly hyphenated in the English language.
Amazon does most certainly pull books that have bad spelling or grammar based on user complaints, and I'm glad they do so. I've stumbled into poorly self-edited Kindle books many times, and have been awfully pissed I've dropped money on them. I'm happy for some quality control.
For those that think there should be a completely hands-off release process for these books, that's just horseshit. Books have been edited pretty much since the concept of "books." If an author wants to apply back for a waiver based on their Joycean command of the English language, wonderful. For a pulp writer, I don't buy it for a second.
I'm also waiting to hear about the rash of automated spell or grammar checking causing issues. Because right now what I see is one frustrated author throwing around accusations and any number of satisfied authors who actually wrote their books correctly.