And I think most people who hate Jira actually just hate the process their company has imposed inside of Jira.
The vanilla out of the box product is actually quite close to old Trello, in simplicity. But there are so many ways to fuck it up and overcomplicate it, and so many companies proceed to fuck it up and overcomplicate it.
This is absolutely it for me. I've never had to use a Jira instance that wasn't absolutely ruined by its maintainers.