The lack of "Intents" on iOS is deliberate IMHO. Apple's products are in the default roles for all the common intents and implementing support for switching in

The lack of "Intents" on iOS is deliberate IMHO. Apple's products are in the default roles for all the common intents and implementing support for switching intents across the OS would result in less people using Apple's first-party apps. Being the browser is a very valuable position, and not one I expect Apple would invest dev resources to give up.