i think curators have a nice screen that they can use to see how specific common names are assigned to places, but folks like you and me can use this (undocumented?) API endpoint to also see the setups:
https://www.inaturalist.org/taxon_names.json?per_page=200&taxon_id=42278
https://www.inaturalist.org/taxon_names.json?per_page=200&taxon_id=47062
basically, it looks like there’s a particular user who has added these common names as English names for S Africa. i’m just guessing, but some of these may be literal translations of the Afrikaans names to English.
if you disagree with the English names for S Africa, i think i would bring it up with a curator by maybe flagging a couple of these taxa. from there, i’m not exactly sure what the process is, but maybe the curator can confer with the creator of these names to maybe arrive at some sort of agreement on what the names should be or maybe correct some sort of procedural issue.
maybe if these look malicious or pranky, you could also bring it to the attention of staff at help@inaturalist.org (@tiwane), and they might be able to resolve this, too.
that said, i don’t think there’s a bug here. so maybe if a moderator (ex. @bouteloua) sees this, they can move this to the General category.
oh… and maybe there is something here that is related to https://forum.inaturalist.org/t/local-names-south-africa/18734?