How did Hyundai labeled cars get access, without granting KИ cars access? They're the same company.
https://en.wikipedia.org/wiki/Vehicle_identification_number
Kia was supposed to have access in North America by now so Tesla must have enabled it according to the original timelines and not the revised timelines.
The restrictions are artificial. Kias have been able to use Tesla chargers in Europe for years. It works because it's all CCS. NACS is CCS with the J3400 plug.
Interestingly enough, I was trying to figure out which of the two cyrillic transliteration was the “officially” accepted one, so I went to their russian wikipedia page[0]. To my surprise, I wasn’t able to find the answer, as all mentions of the company/brand name on that page were in english only.