I don't think thus is what was meant. I don't think they were questioning if OS and browser makers were embedding llm features but rather if people want them.
I find many frustrating. I had an iphone previously and the llm summaries of text messages are what drove me to finally drop ios. I have a family member who is undergoing cancer treatment. I can't explain to you the frustration of seeing wrong text summaries when an llm goes wild hallucinating test results when the actual text simply said taking a test. OS basics and communication should be trustable. Not perhaps hallucinations of a small shitty model.