"Nearly 3,000 people died in 9/11 and over 6,000 people were injured. Police, fire and emergency responders are still dying from the after effects and cancers caused by the twin towers collapsing. It was a terrorist incident not a terrible fire. The two are not comparable. 9/11 changed the world forever."
Actually, there are quite a lot of parallels with Grenfell Tower. For example, very high levels of brominated dioxins were found around the Twin Towers. And while the authorities here have yet to actually take any toxin samples, there is no doubt there was also high levels of brominated dioxins, mainly because you only get them when brominated flame retardants burn; and the tower was packed with those, mainly in products such as upholstered furniture. Also, responders at Grenfell, like the police and fire services, will likely have been exposed to cancer causing chemicals such as brominated dioxins. Finally, the authorities around the Twin Towers - e.g. the Environment Protection Agency - claimed at the beginning that there would not be anything to worry about from toxins. It was 10 years before the head of the EPA admitted that she'd got that wrong. The authorities around the Grenfell fire are also currently claiming that there's nothing to worry about regarding toxins.