Yes, that monument is all about that final climb and descent. (Nothing to do with the nigh 300km before hand!) Who could argue that it is not integral to the sport. The downward section is hazardous but probably not to the degree of some Alpine climbs?
You could say it was due to being near the end of the stage and I would agree that just incites those of that disposition to have a go but remember Pidcock's descent from the climb prior to Alp D'Huez?