I have absolutely seen documentation in Jira. Sometimes the canonical advice for how to do a task is "Go clone JIRA-1234 and follow the steps laid out there".

I have absolutely seen documentation in Jira. Sometimes the canonical advice for how to do a task is "Go clone JIRA-1234 and follow the steps laid out there". It's a shitty documentation system because it's extremely hard to find that organically, but people do use Jira as documentation.