Maybe someone reported your account/consecutive posts and the moderator handling the deletion forcused on your account post history?
That was a possibility I had considered. I had a feeling that a moderator went through posts from several accounts and not just mine and maybe did the same in other threads but without any member reporting the matter, it is a theory. (That was before reading LoyceV below).
There was a topic about this last May. This is what caused it:
While the main reason for merging posts is to reduce the overall size of content posted by the same user whenever possible while maintaining general consistency of the rules, I now see that perhaps I was too overzealous in doing so for old posts. In the future, I'll generally refrain from merging old (as per what would be considered old when reporting a post) posts.
(read the topic for the full context)
That makes sense now. I thought something such as this could have happened, I was not sure if I had read about it or whether I assumed it had happened. The bot concept is good, if used correctly it could be a useful tool to make moderators become aware of posts that require their attention.