I doubt that anyone is actually suggesting that Siri should not be better, but to me I think the issues with it are very much overblown when it does what I actually ask it to do the vast majority of the time since the reality is most of the time what I actually want to ask it to do are basic things.

I have a several homepods, and it does what I ask it to do. This includes being the hub of all of my home automation.

Yes there are areas it can improve but I think the important question is how much use would those things actually get vs making a cool announcement, a fun party trick, and then never used again.

We have also seen the failures that have been done by trying to treat LLM as a magic box that can just do things for you so while these things are "Technically" possible they are far from being reliable.