Yeah, it's used all over the world for not only cop radios but also control systems for things like power plants and railway switches, and ETSI's backdoored cryptography is sometimes relied upon for authenticity as well as confidentiality. So, it is literally possible to exploit this backdoor and cause physical disasters with a radio transmission.

The conspirators should be held accountable and should never be trusted again, but instead they're having more of their future standards written into law. You can read an interview with the chair of ETSI's Technical Committee TETRA and Critical Communications Evolution (TC TCCE) Brian Murgatroyd here.