Jira to me is a mostly a tool for managers to coerce developers into a more manager-friendly interpretation of “agile” than anything else rather than something developers would use out of choice.
When you’re doing something for the sole purpose of keeping someone off your back about it then you inevitably half-arse it, so in reality we’re paying Atlassian a small fortune for nothing more than a wall of fairly bullshit estimates. Don’t even get me started on how slow and flakey the UI is on the cloud version, it’s such an intolerably poor quality bit of software to actually use as a dev. I’d be very surprised if Atlassian actually dogfooded the cloud version because it really is an abysmal effort.