Why is this Polycaon stoutii (Stout's Hardwood Borer) observation casual?

I don’t understand why this observation is casual. I took the pictures in front of a hotel in San Luis Obispo, California.

This is the link to the observation: https://www.inaturalist.org/observations/86369532

Because someone has checked the “No, can’t be improved” box at the bottom while the community taxon is still at the level of Coleoptera.

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Thanks! I didn’t notice that.