I was not talking about regional identities I was talking about ethnonym – ethnic identity.  There is no a confusion about the ethnonym (self-identification ethnic term) Macedonians use. I

Austrian is a modern day ethnonym Austraians use.  They don’t call themselves German irrespective of their history and achievements. Mecedonian is a modern day ethnonym Macedonians use. Both ethnonyms are recognised around the worldd. The examples I provided are valid. If you are confused  about what ethonym can mean, then check the dictionary.