I believe this article is only about this specific system. The problem is that the name of the system is "Electronic Medical Record", which makes the article sound like all such systems are hated.
I don't think that's the case. AFAIK there's no such system. The article specifically reference Epic, which is one of the biggest (_the_ biggest?) EHR software company in the US. My wife used it as a nurse and I've watched my own providers struggle with it. It sucks.
Indeed. The biggest hospital where I live (Trondheim, Norway) is still running at reduced capacity and over budget a year after moving to an Epic derivative. Doctors and nurses are burning out, many talking about moving elsewhere. Being recently retired, I am concerned that this may not be a safe place to grow old, if the hospital (by all accounts an excellent one) is dragged down by this horror of a system.
Saying “it sucks” is like saying “SAP sucks”. Whatever system you get out of one of these projects is 99% dependent on the project team (on both sides), and 1% on the product base, which is invariably “meh”