As you have found out, there is no native way to do so, however as you posted there is a feature request that describes a similar functionality.
Just for the record, I would also mention the Confluence CLI which provides the ability to report permissions on space level, however this is clearly not reporting on user level.
Hi Community! I’m Elaine, Confluence Product Manager. You may have read my earlier post about page tree in space navigation sidebar. I'm excited to share another improvement that helps you organize ...
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