He really shouldn't have, even though he's a murdering bastard - he's been left stateless.
However, someone mentioned him as an example of a white person being stripped of his citizenship, and he's not white.
The reason there's not as much discussion about him is partly because it was straightforwardly illegal of the UK to make him stateless, and partly because teenage girls and their dying babies unsurprisingly elicit a little more sympathy.
It can and has been done.
Strung out's right that this law affects more non-white people proportionately. Citizenship is automatic for people whose parents or grandparents were born in Bangladesh, Pakistan, Kenya, Nigeria, the Philippines, and lots of other countries that aren't majority white and have significant populations in the UK. It's absurd to act as if white people are going to be equally affected. The only significant dual nationality of a majority white country in the UK is likely to be Irish, and that's not automatic if it's just grandparents - plus it affects an awful lot of non-white people too.