Yep I feel like they solved the problem that Apple never managed to solve with Siri: How to interface it with apps. Seems like this was an LLM-hard problem
Yes and no. Neither Apple nor Google even tried it properly. "[Siri|Ok Google], use ${brand 1} to ${brand 2} in ${brand 3}" isn't an integration - it's just an insidious form of brand advertising.
My guess is an LLM-based Siri is right around the corner. Apple commonly waits for tech to be proved by others before adopting it, so this would be in-line with standard operating procedures.
My guess is that LLM-Siri will be crippled by internal processes and lawyers