Whether because of laziness or simply because he hasn't been exposed to well-written criticism, DMR demonstrates a very poor understanding of the opposition to Excel's misapplication in the business world.
He writes,
"Software folks are shocked that so much wealth was entrusted to a simulation written by an amateur with a spreadsheet program. But they shouldn’t be surprised, because that’s how it’s been for years."
He seems to think this is a simple case of "geek prejudice," and tries to plead his argument accordingly, with the preachy history lesson and so forth.