Absolutely indefensible position. Destroying artifacts and evidence of the past simply because we don't agree with what happened in the past is a vile sin that our descendants will never forgive us for.
https://www.carscoops.com/2007/10/war-crimes-soldiers-destro...
How many months, how many years? Does it matter if the person who did it is a respected scholar or a convicted serial killer?
with an extra 10 years for respected scholars