You’ve got to realize that you’re comparing a server farm running gpt to a model running for most things locally, on the oldest phone that supports it. It’s as close to apples to oranges as you can really get, yet I’d argue the Siri ai revamp is pretty impressive given these considerations.
It is a step up from the old Siri as it can answer any question, yet again you have to say Hey Siri for each follow up question. This is especially true when driving where i use voice tech the most.