The problem is not about what Siri can do or not do. It is about a $350 speaker. The sound quality is just "good for such a tiny speaker" but not good compared to other $350 speakers. And you need two of them at $700 for stereo.
For most use cases all you need is a tiny and cheap speaker with some microphones inside. Like Google's $29 product.
If people care about sound quality they will buy real speakers either pair for stereo or a set of 7 or 9 for surround sound.
People who care about sound quality will want their own amplifiers and speakers. What is needed is a simple device that has a set of audio output jacks to connect to an existing system --- that would be the high end product. The low end product would be like Google's and sell at a $30 price point.
I don’t have a problem that the AirPod doesn’t have an audio input, that’s counter to how Apple intends this device to be used with its 360 sound field. It’s designed primarily for Apples customers within its ecosystem for the best experience, not as a halo product for no Apple customers, which is a mistake in my opinion — but there you go.
If someone wants to attach it to existing audio equipment, and the equipment is not capable of BT or WiFi streaming, then a simple dongle can be purchased to add that capability. In that regard I think Apple did make the right decision.
I do kind of hate the power cord, and wish it had the option of a rechargeable battery. Maybe an inductive pad like the Apple Watch, so that it can easily be moved to the best spot in the room for listening from the charging location.