Crezzi I don't know the guy at all but can you dispute or disprove what he wrote? Don't like him? Then use the other link I included, a book by Franz-Josef Brueggemeier "How green were the Nazis?" - a professor of history at the university of Freiburg, Germany. "The Nazis created nature preserves, contemplated sustainable forestry, curbed air pollution, and designed the autobahn highway network as a way of bringing Germans closer to nature."
On topic I think that aircraft could be repaired fairly inexpensively. On a positive note the (Green or Nazi ) vandals could have done a lot worse things to it.