Aaahhh yes, the joys of text based only communication.
Although with regard to being irritated/tired with the topic etc, I would have speculated the same thing with: "...and up, and up, and up." That does seem to allude to that (rather intentional or otherwise). Had that last phrase not been there, I wouldn't have thought about the poster being irritated. That may have been an error on our part, but I could easily see why that was thought.
When there are so few "tells" to go off of in the communication, words used are mulled over just as much as what was explicitly said (or lack thereof). At least in my experience. That does leave room for error, but I think quite a few people do that rather intentionally or not, although with varying levels of success.