what they hate is there being cultural aspects not under their control
china claims they were interning uighurs to prevent extremist terrorism and separatism, not control culture. xinjiang shares a border with afghanistan. the claim is that uighurs were going off to fight in syria and other regions, then coming back to start shit at home. china claims the mass detainment of uighurs was to provide language and vocational training to counter the sway of jihadists returning from the middle east.
as a sane person, I actually did look into it, and found that structural steel does weaken significantly at the temperature jet fuel burns at.