My parents use Android to ask “What are the 5 biggest towers in Chicago” or “Remove the people on my picture” while apparently iPhone is only capable of doing “Hey Siri start the Chronometer / There is no contact named Chronometer in your phone”.
My iPhone is lagging a ridiculous 10 years behind. It’s just that I don’t trust Google with my credit card.
The only reason to care about it being OS integrated is to interact with functions of the OS, which siri does fine.
Likewise, the phone does not understand removing people from a photo. It is a feature specific to the photo app, and Siri allows you to wire in commands for the features in your app just fine and has for years. If Google decided for competitive reasons to not ship this feature to non-Pixel or non-Android users, thats not a Siri fault. That Apple did not integrate this as a voice command into their Photos app is also not a Siri fault (is it really common to remove all people from a photo, vs specific people?)
Is what I was referring to, Siri often fails at even opening apps which is an OS feature. Regardless, even for your examples at a certain point an AI assistant not being able to do certain things while others can does become the fault of that AI.