Yet again it’s a feature that can be disabled, not to mention your hardware probably will not even support it. Obviously something like AI assistant will monitor everything you do same as voice assistants like Google and Alexa monitors audio 24/7 if you want to wake it up with voice commands. Article mentions a macOS software doing exact same thing called Rewind.
Unless all of important recorded data will not be saved locally, this is yet another nothingburger instead of ″Look at Microsoft killing itself, everyone will move to Linux next year″ nonesense.
Would I personally use this feature? Probably not, I would disable it and move on mainly because I have no need for this. Will there be people who will use this? Absolutely.