Yeah rocks on the line like that are tough luck.
Similar in Portugal last year - Tanak broke the car on a big rock and Paddon crashed avoiding one, both while leading the rally.
Must be a hard call for the engineers whether to compromise speed with a higher ride height etc to protect the car, or run a bit lower for speed and hope the big rocks are in places the driver can see them in time to avoid them. Probably a bigger risk for the later road positions on the rougher rallies as the road gets ripped up more.