Not sure why you’re putting a definition of abject here? Are you saying that they should have said abject instead of object? That would mean something different.
object lesson
noun
something that serves as a practical example of a principle or abstract idea
Examples of object lesson in a Sentence
His life story is an object lesson in how not to run a business.
Not sure why you’re putting a definition of abject here? Are you saying that they should have said abject instead of object? That would mean something different.