Casual observations used inconsistently on taxon page

[trscavo]

Platform: Website

Browser, if a website issue: Chrome

URLs of any relevant observations or pages:
https://www.inaturalist.org/taxa/51648-Clintonia

Screenshots of what you are seeing:

On any given taxon page, the number of observations for each child taxon is shown on the “Taxonomy” tab. The number of observations shown includes the casual observations whereas every other data item on the page excludes the casual observations. I believe the number of observations shown on the “Taxonomy” tab should exclude the casual observations for consistency with the rest of the taxon page.

For example, on the taxon page for genus Clintonia, the number of observations for each species in the genus is shown on the “Taxonomy” tab. These observation counts match the observation counts on the Explore page with verifiable=any (which includes casual observations):
https://www.inaturalist.org/taxa/51648-Clintonia
https://www.inaturalist.org/observations?place_id=any&subview=table&taxon_id=51648&verifiable=any&view=species

On the other hand, every other data item on the page excludes the casual observations:

• The observation leaderboard consists of a link to the Explore page with verifiable=true (which excludes casual observations):
  https://www.inaturalist.org/observations?verifiable=true&taxon_id=51648&place_id=&preferred_place_id=1&locale=en-US&view=observers

• The identification leaderboard consists of a link to the Explore page with verifiable=true (which excludes casual observations):
  https://www.inaturalist.org/observations?verifiable=true&taxon_id=51648&place_id=&preferred_place_id=1&locale=en-US&view=identifiers

• The total species observed (5 of 5, in the case of Clintonia) includes a link to the Explore page with verifiable=true (which excludes casual observations):
  https://www.inaturalist.org/observations?verifiable=true&taxon_id=51648&place_id=any&preferred_place_id=1&locale=en-US&view=species&rank=species%2Csubspecies%2Cvariety

• Just to the right of the total species observed, the total number observations is shown, along with a link to the Explore page with verifiable=true (which excludes casual observations):
  https://www.inaturalist.org/observations?verifiable=true&taxon_id=51648&place_id=&preferred_place_id=1&locale=en-US

• Casual observations are explicitly omitted from the “Seasonality” chart. Only verifiable observations are used to construct the chart.

• Casual observations are implicitly omitted from the “Plant Phenology” chart. Only verifiable observations are used to construct the chart.

[tiwane]

Added an issue here: https://github.com/inaturalist/inaturalist/issues/2864

[tiwane]

So we looked into this, you can read more on the github issue above. But briefly, we decided to leave this as is because fetching current counts for verifiable observations here would be a serious performance hit. I understand there is an inconsistency, but in my recollection it hasn’t been brought up before, so removing the counts would likely be more disruptive than keeping them.