Yes, you are wrong. It's clear you haven't even read the article. The article is an overview of (semi-)recent* archeological research into Roman frontier fortifications. The general conclusion that it draws was that the Romans focused too much on fortifying their frontiers, which provided them with a sense of complacency. Once the frontiers were breached, it was already over. Sorta like the Maginot line. It also suggests that fortification-building towards the end of the empire was a symptom of the decline itself, not a cause (or cure).
All the off-topic comments here about politics are by people who didn't read the article.
All the off-topic comments here about politics are by people who didn't read the article.
*It's from 2012.