When I read the comments earlier, I sighed heavily as it read very, very badly. Having watched the conversation, the choice of words is still inappropriate and lacking in care, but it comes down to confirmation bias - I don't think the intention was there to say the people that died lacked common sense, but on paper is reads as such so an apology is justified.
Regardless, politicians have to be a lot more careful and respectful in how they talk about Grenfell Tower and the choice of words they use.
Having volunteered on management committee of a block of flats a long time ago, I never understood the stay policy of the Fire Brigade. It makes massive assumptions about the ability of buildings to stop fire spreading and the fire safety policies in place. Nowadays, there is no way I'd sit in a flat if there was a fire in the block. I'd be gone ASAP.