Siri:Siri:
It has been a major part of the iOS experience since 2012 with the release of the iPhone 5 (I know it existed on iPhone as an app before), and has been pretty dreadful for over a decade. Even the likes of Google and Amazon have produced smart assistants on cheap products that are much better and actually produce the results the user requires.
Maps:
Outside of the United States this service is flakey at best. I tried it recently after a 10 year break and it is still unreliable. Nice interface but that is about it.
HomePod:
Not iPhone related but, Apple watched the competition release affordable home smart assistants and build up a userbase before releasing the HomePod which was an eye watering £319. It blocked non-Apple services initially in an attempt to force people to buy Apple services like Music and tempt them away from Spotify and Amazon. It didn't really work and finally they conceded to discontinue the original HomePod and focus on the HomePod Mini, albeit nearlt 4 years too late.
Yes, pretty dire indeed. I do use it to turn on and off wifi/bluetooth and ask the current weather. Useless for anything else.
Maps:
Actually all right for Switzerland but still lagging behind if I want to find a particular business/building at least in comparison to Google.
HomePod:
Never had one and not interested personally.
Siri should be a priority for Apple.