To me, it is suggestive of brain damage in some form to drive to the place you're meant to be, not bother attempting delivery and leaving, yes. If you're not going to even bother attempting delivery, why further stress your already tight schedule by taking a pointless detour? You're conveniently glossing over what actually happened in order to promote some bankrupt argument about delivery schedules.
The point I'm getting at is that many of us take days off which forgo income in order to receive deliveries on certain dates as choosing a more convenient date is simply not feasible. This is especially true of large deliveries where commuting with the delivery being made at one's place of work is simply not possible.
Everybody has work problems from time to time. Everybody has ridiculously high expectations laid at their feet because management is disorganised, etc. There is never an acceptable time for this internal mess to be displayed outwardly to paying customers - that's just bad business.