While Jira has large admin overhead, it can be configured to make things simple for users. And I still think most hatred of Jira ought to be directed at management for imposing bureaucracy and control through the tool, instead of the tool itself (I see this first hand as my current gig has grown from “startup” to “enterprise” in a few short years).
But Atlassian has made a lot of questionable product decisions over the last many years, mostly in terms of UI/UX. What were once very much developer-centric interfaces are now geared to general enterprise product management. Somehow it’s becoming _less_ functional over time with each major revision.