Yes the fake asylum seekers have been raised for years, usually by Conservatives who have, as you say @SapphireCasino been called racist bigots. If you make it easier to do something (like get asylum) by claiming to be something you are not, the number of people claiming that thing will increase!
It is rather ironic the BBC doing this, as they have been very much on the side of those who say men will not pretend to be something else in order to get what they want, e.g. why would a man say he is a woman just to get access to women and children when they are vulnerable or undressed? Well, duh...
I do wonder what utopia these people live in, where they have never met anyone who will lie and manipulate others to get what they want. It must be very pleasant on that planet.