I think there are other reasons involved to scrap a vessel so relative shortly after the vessel got in service. Afterall the owner can really start to make money once the mortgage is paid off. I'm not sure about the regulations abroad, but here owners have to pay less tax if they invest their profit in their company (with others words; the company has to pay more tax if they keep the profit at their bank account). I'm not sure of the reasons in case of the Pierre Guillaumat, but the owner might bought her to ditch some money.