Seems like the title is a bit deceptive. It mentions multiple airliners from both Boeing and Airbus, that are potentially in need of having engine components replaced, due to defects introduced by GE Aerospace.
FTA: "As per FlightGlobal, the FAA’s proposal is the latest in a series of regulatory actions that have been taken in response to the discovery of iron inclusion in several types of GE Aerospace engines, including the GEnx and CFM International Leap turbofans. The GEnx powers Boeing 787 aircraft, while the Leap powers Boeing 737 Max and Airbus A320neo-family aircraft."
Tell me that you don’t understand the difference between airframes and engines without telling me you don’t understand the difference between airframes and engines
While I don’t necessarily disagree with the sentiment, you must also understand that Boeing makes precisely zero engines for its commercial airframes. In the context of this article, the companies you should direct your ire to are GE and CFM International.
Having been an insider in the industry, absolutely yes, GE is a shitshow. The schedules and budgets are too tight and don't allow for mistakes, and engineers are terrified to come forward when they find issues.