I would say that is not completely accurate. Cormac McCarthy's The Road is dystopian, painting an awful and hopeless future. Nevil Shute's On the Beach is dystopian. For sure, the first book is more like the Truman Show (movie). Without giving anything away, the series does not end with the hopelessness of your typical dystopian novel.
I can't say it's the future you want to be part of, but it's not totally hopeless. I did like the way it ended.
OK, maybe it's 30% dystopian and 50% post-apocalyptic. And 20% action thriller. Third book has a lot of action, for sure.