Not enough people give a shit about "general purpose computing" to matter. They use computers for a few things and as long as they can do those things they're fine with it. My wife loves all her Apple gear. It provides her with a wonderful, curated experience. Okay, maybe it hasn't been so good with recent iOS releases but it still beats Android or Microslop. Being able to hack, modify, or install arbitrary stuff on your device is something only a minority of a minority care about, statistical noise in the quarterly sales figures. When you compare that to the harm done by malware, illegal or indecent material, and the negative blowback to YOUR OS's reputation—or worse, the "felony contempt of business model" enabled by a general-purpose OS (piracy, ad blocking, etc.)—it's a no-brainer to implement restrictions.

Yes, lots of vulnerable users get harmed by modern tech. E.g. people have lost their minds using AI, their livelihoods using smartphones, their life savings using the Internet. In general, I prefer a solution where any mental health issue (age-related infirmity, ADHD, etc.) result in protection from modern exploitative tech like this.

Every application use for such people should be supervised by a government official trained to ensure you are not hurting yourself.

This way people who want to use AI, smartphones, or the Internet can do so if they’re healthy and the mentally disabled can be protected. We know that this need exists because even on this “Hacker” News forum everyone gets very upset when a mentally disabled person gets injured after AI use.