I know that sxb.There will never be a united ummah, guaranteed. The Islamic world will forever be disintegrated.
I think it is a very weak and superficial 'brotherhood'. Even in the West, Muslims have segregated mosques by ethnicity whenever their group is large enough. The laangaabs go to diverse mosques, but the laandheers have their own ethnic mosques often.I know that sxb.
Muslim brotherhood doesn't literally mean unification of the Islamic World, only an alliance of peoples that share a common Islamic values etc. Similar as to how Orthodox Christians around the World have a sense of brotherhood with each other.
That's largely not true. Masjids are always diverse, ofc you'll observe an ethnic majority in some mosques that are in certain areas populated largely by one ethnic group.Even in the West, Muslims have segregated mosques by ethnicity whenever their group is large enough.