Even the linked blog post indicates that that is not the case. Windows has Copilot buttons on practically every built in application, a taskbar icon, and a dedicated physical keyboard key that people commonly accidentally hit (contractually required for OEMs to provide). They also actively promote Copilot in the OS (particularly Home Edition with nothing disabled e.g. "Tips," Notification Spam, Recommendations, etc).

Nobody can predict what Apple will do tomorrow, but as of today, they aren't really pushing Siri/Apple intelligence really hard particularly after initial setup. None of most of the above for example.