For real, I don't think it's all about "each special snowflake's way of working" but there are legitimate needs that change

Each team can have a different workflow with Jira

Jira works for non-software-development tasks as well

I've seen it used on companies having 4/5 levels of stories deep (think Initiatives/Epic/Stories/Subtasks/etc. Different companies split this different ways.

The plugins sound inconsequential but they are very useful (almost a must) in several occasions.