I think can empathize with kids having contingency plan. The last few years have been crazy years. Your match isn’t a guarantee, let alone reach, dream schools. You can’t blame kids for applying to safety schools even though they aren’t that crazy.
My son applied to a couple “safety” schools in the CSU and UC system. His match schools with increased applicant rate and test blind at UC (despite him having a 36ACT, strong ECs, and 4.2 UC cap and 4.41 UC Weighed) are not even a guarantee on top of UC always seems so random who they let in.