Why is it good that you are trying to sound fake? At least when the Beatles put on accents they did so for fun.
You don't like the world being multicultural, you like the world being a lot of different MONOcultures. France only does French things, Germany only German, quaint African and Indian natives only doing native things.
There are Pakistanis who are more English tna you ever will be, as they have lived in England for 40 years, wheareas you have only been there for a decade. Only following your logic.