If you blindly click buttons you will not accidentally enable a kernel extension.
The accessibility preferences panel appears to accept those synthetic events, however.
As someone who's gone poking around system internals for twenty-plus years... I can tell you that you're very wrong here. I've forgotten about more completely broken operating systems than I care to discuss, but many of them have ended with me poking around and blindly clicking buttons in a vain hope of getting the OS to do what I want it to do which is apparently frequently different from whatever OS producers want me to do.