In the UK, we already see a sort of uncodified affirmative action for the Muslim community (mostly comprised of Pakistanis and Bangladeshis), whereas Non-Muslim South Asians mostly had to work their way up and live in strict conservative households; most of the media are also aggressively supporting the Muslim community and ignoring the wishes of the Indian communities.
I mostly disagree with this issue. It's almost like the following question, 'how would you feel if you grew up under Thatcher and New Labour, only to be taxed and hated on by Corbyn?'
The fact remains that the majority of British-born Muslims and Non-Muslims in the UK hate each other and that British South Asians adhere to ethnoreligious groups. Eventhough the Muslims have far more socioeconomic issues that any other South Asian group, a lot of those other groups have had to deal with far worse social issues (caste, gender, sexuality) that would be too great to deal with through affirmative action. Furthermore, a lot of Non-Muslim South Asians aren't supportive of immigration and prefer to support the development of India - this would not be possible through affirmative action policies.