If only the people of the British Raj were alive to see this. The descendant of Indians/Pakistani elected to be Mayor of London. One of the most powerful positions in the UK. Barely 70 years from the end of the British Empire in India, a Pakistani is leading the people of London, pretty much behind only the Prime Minister and Queen in power. Unreal. White people itself are a minority in London now, perhaps the second most culturally significant city behind just New York in terms of the West.
I would share your sentiment, but white people are still a majority in London and I would hesitate to say that the mayor of london is more powerful than cabinet minsiters like the Home Secretary and the Chancellor. It is one of the most prominent and visible for sure and it will be interesting having a Labour mayor with a Tory government and how antagonistic it might be. As others said, it's mainly about housing and transport. Neither of the mayors before has done much about housing so the main impact so far has been transport initiatives like oyster cards and boris bikes. Boris only ever called in developers scheme in planning to give them approval. Zadiq might be a bit different in this regard, but we'll see how it goes.