The problem here, as with so much of dealing with observation fields, is that there are multiple ones all doing the same thing. There is ‘tag name’, ‘placeholder’, a bunch of ‘holding bins’ etc.
Ideally they would be centralized under one, but I guess using even one of them is a good start.
The whole issue of standardizing them has been extensively discussed such as
https://forum.inaturalist.org/t/standardize-and-clean-up-observation-fields/363/17
https://forum.inaturalist.org/t/observation-field-standardization-wiki/380
The end result, the site is not going to do it.