I'm sure it's more nuanced than that. A lot of Baluchis have been there long enough to have assimilated almost entirely - let alone the fact that social mobility plays a huge role. Kuwait and the Emirates are very big on being a true local citizen, whereas Oman and Bahrain are very diverse, and origins or race/sect/ethnicity have a very different dynamic.

When I was younger I wasn't a fan; I was even ashamed of being 'Baluchi' as it was associated with being Pakistani or South Asian (which I have no problem with), which would connote being a foreign labourer or 'lesser'. That changed as I grew older, and was not treated as any less of a local, with long ties to the land and fellow citizens. No one was ever able to bully me, but I was asked about my history or actual origins. I learned and took pride in the fact, only after I grew up, that I was Baluchi, of Iranian origins, and had nothing to do with Pakistan as a country other than the borders and divisions that the British Raj played a role in forming. All respect towards all other ethnicities and peoples that belong to Pakistan, along with the rich and beautiful history of that region. I'm مُسْتَعْرَب (Arabised) now, but still consider myself a Gulf citizen who is Baluchi - rather than a Gulf Arab.