‘scholar’:
The six datable events anchor the entire book in the 6th century BC for any other claim is simply nonsense.
Identifying datable events in a work only confirms that the work was written some time later than those events. And because Daniel has obvious references to events during the Seleucid period (as is explicitly accepted in JW dogma), the time of writing is thereby identified as being around 164 BCE. Setting aside the exaggerated end times claims about a hypothetical future, there are no details in Daniel requiring knowledge beyond around 164 BCE. (Daniel was in circulation by the end of that century so writing couldn’t have been much later than 164 BCE either.)
Christian re-interpretations that some of the elements refer to the Roman Empire, to Jesus, or to the modern era are incorrect and all the elements in Daniel can be identified with events up to the 2nd century BCE.