It’s virtuous to destruct false ideas. If your child believed that two plus two equalled five you would destruct that belief immediately without a moment’s hesitation, because it’s false. What Dawkins does is useful and purposeful, he helps people to think more clearly. Building a 46-metre tower to celebrate atheism might be a nice thing to do, but it’s not constructive. If anything it seems a little tit-for-tat with religion, which is surely a non-contest given that we’d have to produce something quite incredible to best the stunning ecclesiastical architecture of Europe.