I also have to agree with some of what u said.
I'm citizen of Jordan, although not of Jordanian lineage. I guess even if I'm not a Pakistani or a an Indonesian, I still can feel with Muslims of such origins if ever they are mistreated, and I know mistreatment occurs from time to time. But I also know of many maids who are treated as members of the family, and fewer treated badly in Jordan. I don't want to idealize ME, but the cases that u pointed to are individual but more present in the Gulf where luxuary is extreme and religion is on the shelf in some areas.
I have a friend working in Saudi Arabia who often tells me "There are areas where u think people are Sahabis because of their treatment!" Dua groups built basketball courts for Chinese (who are often called 'yellows' by racists) and invited them to Islam, many converted.
I agree there are exceptional cases: Many Indenesians and Malaysians come to ME to study Sharia thinking we are sons of Sahaba, only to discover that we are, by far, less religious than them. But they socialize easily, although they don't like local food
Chinese were stereotyped as HIV projects in Jordan and everybody avoided them, until an Islamic preacher invited them to dinner and talked to them about Islam. Many converted. In a week, the chinese embassy told him, u can preach Islam in china if u like and have a visa whenever u like.
You will never know that people here enjoy listening to Pakistani preachers more than to Arabs unless u see it. Many imitate Pakistani islamic dress!
Summary:
incorrect: Muslims are discrimanatory against ethnically different Muslims.
Correct: Uncommited Muslims/ Muslims by name are sometimes discrimanatory against ethnically different Muslims. Pan Arabists
might be an example.
Wassalam