They probably hate Jira for the UI/UX or something similar.
I've worked at places that tried to do project management via worksheets and it's quite a challenge to keep those up-to-date, much less add dynamic connections to different repos for updates, adding new stories/tasks, etc. Jira is a godsend by comparison.
I just left a place that had three different tracking tools that devs had to update, with the Azure boards being customized with all kinds of unrelated 9001 process fuckery that necessitated failing to save any update ever until you dug out the field that was missing. The fields changed on each move across the board.
Unsurprisingly, they were planning a project to introduce another tool on top of it all. Pretty much just bike shedding the company into the ground.
I've worked at places that tried to do project management via worksheets and it's quite a challenge to keep those up-to-date, much less add dynamic connections to different repos for updates, adding new stories/tasks, etc. Jira is a godsend by comparison.