The height is to minimize forest disturbance, while the curvy shape is to beat the eyesore allegations—which may seem a bit silly, but imagine how ugly this thing would be straight.
They think the scaffolding is ugly, so they've covered that up with some sort of like cloth screen that just has like a picture of the building that's behind it.
Until recently, the south side of Khufu's Great Pyramid had an ugly museum building in which they showcased the enormous solar boat that was discovered in the mid-20th century.