Yep, boats sink, planes crash, trains derail and people can say "not today"....OTD is a BS measure at best.
So this is one thing we disagree on (although maybe once you see my response you will see my point).
Please note that I am responding about metrics in general and NOT any standard's requirement to have whatever a "KPI" is or a "quality objective" is...
OTD is absolutely crucial to many businesses. How else can we plan? How else can we keep our employees employed each and everyday? How else can we keep our inventories from ballooning out of control? Or having too much inventory that has short shelf lives?
Yes there are a few factors that are out of the supplier's control: weather, pandemics, plane crashes, wars, terrorists, etc. but that is why contract lawyers invented force majeure clauses.
Is it really the metric or the idiots who punish suppliers for uncontrollable events? Is it the idiotic auditors who issue NCs for not meeting a goal (talk about pushing people away from continual improvement!). Isn't it more important that we look for areas to improve when a goal is missed? Isn't more important to look for effective ways to mitigate the effect of a missed goal? Isn't it more important to look for ways to respond to missed goals?
Now we can all say that some high level goals like profit, sales, Perfect Order, on time delivery etc. could - and should -be broken down into the smaller factors that effect these organization wide measures so that each functional area can focus on their effect on the overall Company success. BUT that doesn't mean that the company as a whole shouldn't be looking at these measures and trying to continually improve them.
What are really angry about? the innocent metric or the idiot people who misuse the metric to abuse others? Business isn't a game and auditors and leaders shouldn't treat it as such...