https://arstechnica.com/gadgets/2021/11/apples-federighi-delivers-dramatic-speech-on-dangers-of-sideloading/

Apple executive Craig Federighi, who is responsible for the company's iOS software for iPhones, delivered a lengthy speech intended to alarm listeners about what might happen if Apple is forced to allow users to sideload apps. The speech was given at Web Summit 2021 in Lisbon, Portugal, and it follows similar, earlier statements from Apple CEO Tim Cook.