I think some people got quite mad because of a misunderstanding, the post Jerry made on the forums was that 'it would be added next week due to
astounding support. I don't think winning a poll by one vote is really fair in such a big vote. This makes about half the community upset. It was basically a tie, and the few votes last minute made quite a lot of people mad. I hope this will be discussed thoroughly in the next meeting. I'm personally against this suggestion, but I don't personally hate someone that votes yes. All opinions are valid opinions. My biggest argument against adding the map was that:
Only 20% (was 18%) of the time on the server is rooftops. Whenever I play TTT, I always see map changes. That's because rooftops is a great map and all, it's a bit better than other maps objectively, but that doesn't mean people don't like playing on other maps (aka 67thway, dolls, clue, waterworld, innocentmotel, minecraft) In my opinion, it's time to switch out one map for another. Maybe exchange minecraftcity for skyscraper or so. Minecraftcity is barely played at this point, skyscraper was such a good map, it got just beaten out of the 10 map vote. The only complaint on it is that the map is a bit small, but it's tons of fun. i've also seen that people like rooftops just for the easter eggs. Sure, they're fun, but it doesn't make the map the only map we should play.
TL;DR: While rooftops is a good map, you can just extend the vote on the current map, or nominate it when you're not sure it'll be in the mapvote.