I laughed at your comment because sadly I’m of a Gen in which a few sons of family friends got locked up, had to go through daqan celis or due to messing around in their youth and hanging out with local dealers haven’t lived up to their potential but 8/10 times the sisters have degrees and the younger bothers are doing a lot better then the older.
As for low ‘income’ most Somalis in the UK were low income at one point with some doing better than others but for the most part we’ve always been working class.
It isn’t a ‘myth’ it’s what I saw in the 2000s and 2010s.