In the scenario described in the article, where was the bad engineering? It seems to me that the developers of each component (Chrome, OS, other processes) did

In the scenario described in the article, where was the bad engineering? It seems to me that the developers of each component (Chrome, OS, other processes) did things that, while perhaps not perfect, are quite reasonable, and definitely not exceptionally bad. Only together did they interact in this undesirable way. This case isn't some web app that uses infinite memory; the contended resource is a lock.