They failed to rearchitect it to something suitable for the inherent flexibility though, so it remains a disaster area, but one that is uniquely able to fit the whims of any manager that can then mandate it for everyone else.
But the awful client-server architecture, where anything you do takes several seconds of waiting for the client to send who-knows-what to the server and get data back, even selecting something from a dropdown... that is absolutely just Jira. A competing product would be able to deliver much, MUCH snappier UX. Jira is just the crappiest, slowest UI that I have ever had the displeasure of being forced to work with.
They needed someone over there with the power to say no.