Agree with many points in this article. However, there are some enterprise software tools (Salesforce for example) that have terrible UIs for both casual and power users, and offer no performance upside despite longer term usage.

JIRA used to be this bad too, but over the years I've found their UI to improve bit by bit as they adopted more consumer UX standards around their interfaces + adding workflow rules. These improvements have seemed to work well for casual and power users alike.