I got around to reading this, and it's a good read. I think I've read similar before in a piece in the financial press and in some discussion blogs on Bruegel.
EDIT: I think this was one of the pieces
http://www.breakingviews.com/edward-hadas-the-redundant-fictions-of-greek-debt/21183688.article
The two problems I see with getting people to recognise that this though is that, 1) every day people understand nominal values, not net present values, and 2) there are vested political interests, in my view from
both sides of these negotiations, for focusing on the nominal values and total debt-to-GDP values.
The creditor nations' leaders don't want to tell their people that they're not actually getting back what was lent, as well as using the size of the nominal debt to justify strict fiscal policy.
Indebted nations' leaders don't want to tell their people that concessions have actually been made, and the debt isn't as large as would initially appear, as well as using the size of the nominal debt to continue to push for outright debt relief.
I actually think some movement could have been made towards relaxation of the fiscal policy, if we go back six months towards when economic indicators were far more positive, although I could be mistaken. Nor that debt restructuring towards even longer maturities and interest delays, or other ways to make the debt service even more manageable were necessarily off the table. I don't think the bombastic nature of the current government particularly helped matters in any way, though, towards reaching any sort of agreement that could have led to such moves.