There’s a lot of irony in this story that the writer seems blissfully unaware of.
The term ‘Asian’ in the UK is used to describe peoples of South Asian descent, ie India, Pakistan, Bangladesh and to a lesser extent Afghans. The reason the press uses this term is because the above mentioned races insisted on it! ‘Asian’ is the politically correct term chosen by British citizens of south Asian descent to replace Pakistani, Bangladeshi and so on when the overly sensitive amongst their number considered these terms to racially ‘delicate’.
So now the press use the cover all term Asian rather than refering to the country of origin or indeed their religion, but only because that is what was demanded.
Even when limited to the Subcontinent, "Asian" is hardly a racial term. There are dozens of races in the region--Tamils, Nagas, Punjabis, Sherpas, etc. Winston Churchill once commented that making India into a nation-state would be like turning the equator into a nation-state.