that would be an absolutely awful experience.The bigger deal for me is why they can't offload the on-device processing to another device. There is no reason why an Apple Watch cannot use the processor in a phone for AI requests any more than there is an iPhone 15 or lower using the M1 in a Mac or iPad. Seems like a tighter ecosystem opportunity to me.
anyone who used a series 0 Apple Watch, which offloaded a lot of compute to the iPhone, remember the apps that took 10+ seconds to open, the data which took forever to populate, and how, when the iPhone wasn't around, the watch pretty much did nothing.
not only would Siri only work when an iPhone and or Mac is around, but you would constantly have to rely on bluetooth and Wi-Fi connections between these devices.
not to mention that the M1 and A17 are basically the same or very close in single and multi-core performence, but the A17 has a better NPU than the M1, M2 and the M3. their would be no benefit.
not to mention, things like notification summeries already will sync between your iPhone and Watch.
the only product where this even slightly makes sense is the HomePod.