This Kata was never approved, because FArecashew filed an issue that was basically an opinion which therefore couldn't be resolved.
I humbly disagree with FUkissU so I marked his 'issue' resolved, clearing it for approval. Which I will do after I finished this comment.
With an average satisfactory rating of 88% this is good enough.

There's no good standard for this. Some kata never leave beta because they have lingering issues authors do not want to fix. Some manage to collect enough negative feedback that they cannot get to approval requirement, but not enough to get retired. Difficult kata or kata in unpopular languages can stay a year or so before they get enough solutions.
Relatively easy kata with not many issues and authors actively fixing them can get out of beta in a matter of days, often accompanied by a bunch of translations.