It's actually a really good example of the article - there's nothing wrong with debt denominated in a foreign currency, you can hedge against the currency risk.
The whole thing is about risk, if you hedge away all your risk financially there is generally no profit to be made (you're left with arbitrage), if you hedge away all your technical debt then you've essentially (re)implemented it properly.
The whole thing is about risk, if you hedge away all your risk financially there is generally no profit to be made (you're left with arbitrage), if you hedge away all your technical debt then you've essentially (re)implemented it properly.