Rigid blades are not doomed in a crash.
Daisy testing demonstrated repeated tip ground-striking of rigid kite turbine blades.
The same rigidised foam blades which dug small channels still fly fine with little damage and no material loss.
Today - I blew out 2 cell seams on an 11m foil kite and within an hour burst the bladder of a 12m LEI.
Sure a similarly sized rigid would have been damaged by the same treatment.
A small foil can run full speed into the ground with no problems
Large kites are not resiliant is my general rule. (excludes single skin soft kites… Dare you try flying a huge one though)