Yes there is a hole in the article. He didn't mention that Germany lost WW1. Every other nation suffered the same problems but they could get away from them without hyperinflation, Germany couldn't because increasing the monetary supply does not repair an economy.
If one were to completely oversimplify everything the roman empire fell into the "war + debasement" bucket though but it also had a lot of other problems. They were actively fighting a war which meant they couldn't control the influx of barbarian refugees (huns drove them out) at their border. They then committed a grave mistake. They deported all barbarians and killed those who stayed. Some barbarians gathered near the border and formed a big army which then proceeded to plunder Rome. The problems didn't start with money, they got worse because of money.
If one were to completely oversimplify everything the roman empire fell into the "war + debasement" bucket though but it also had a lot of other problems. They were actively fighting a war which meant they couldn't control the influx of barbarian refugees (huns drove them out) at their border. They then committed a grave mistake. They deported all barbarians and killed those who stayed. Some barbarians gathered near the border and formed a big army which then proceeded to plunder Rome. The problems didn't start with money, they got worse because of money.