Several of the points being made here have been discussed in threads on the other Forums
This was a discussion on Second-rate species? - Nature Talk - iNaturalist Community Forum
The thread If you could rename an existing species - Nature Talk - iNaturalist Community Forum started out fun, but soon degenerated into taxonomic pedantry, as people focused on widespread, established common names that did not match taxonomy. Rename ‘Electric eel’ as ‘Electric knifefish,’ that sort of thing.
I got into a bit of trouble along these lines because of a weed with a regional common name that was the same as a more widespread name of a different weed. Tansy. To most of you, that means Tanacetum vulgare. In Washington State, when people say tansy, they usually mean Jacobaea vulgaris. So, naturally, I added “tansy” as a common name (not the display name) for Jacobaea vulgaris, and added Washington as the place. Sometime later, I received direct messages asking me to remove it because it conflicted with a “more correct” name that a group was trying to promote to the public. I explained that this was the only name I ever heard people call it, and showed them several example observations where the observer had actually written “tansy” in the notes, but apparently this was unconvincing. We reached a compromise whereby I removed Washington as the place (so that the name would not be prioritized there) but kept it as one of the common names. Whether people use a name is separate from whether the iNat powers that be like or approve of the name.