Everyone should try to recognize the conditions like the one on Shasta (linked to above). Something similar happened on Whitney in 2018.
Link: Mt Whitney multiple injuries on 6/10/18

People hiked up toward Trail Crest, but it was so early that the surface was hard and icy. Three or Four people slipped and slid, out of control, to the bottom of the chute. Fortunately they didn't die, but they were badly injured.

Hiking up the chute (west of the switchbacks) can be dangerous -- early when it is cold and icy, ....or late in the afternoon when the shadow has reached the slope.