I thought the claim that somehow the mint was losing money was simplistic or disingenuous. The purpose of money is to create tax revenue. If a penny is used 15 times it has created a penny of tax revenue if you just consider sales tax and there are many others. I don't have stats on average life-cycle but I am sure the penny makes more tax revenue than the cost to create it.
You're assuming the US Mint just stamps coins to generate wealth. It does not.