The interesting thing to me regarding both power and blasphemy is that by the fact that it was on display in a major cathedral, those in charge have already given it their blessing. Anyone calling “blasphemy” only looks like a fool.
So you have these “traditionalists” wanting to drag the Church backwards. But due to the hierarchical structure of the Catholic Church that’s just not how it works. Church leadership has made significant progressive strides over the last decade, leaving people like this Tschugguel with only impotent rage and vandalism as their options. And as you state this only adds new context to the art, giving it more power and ensuring that their regressive goals are not taken seriously.
Meanwhile the Evangelicals have gone absolute nutters, I never thought I would see the day where the Catholics were the “progressive” church. But they play the long game, and have always changed along with society over the millenia.