Not that I agree with it, but I believe MS is working on the assumption that they are the IT department for Windows 10 machines. Typically IT departments setup policies to force install updates to ensure the safety of their networks. MS is doing the same thing to prevent Win10 machines from being used as botnets. I think they got tired of being the punching bag on security and now they're enforcing updates. Sometimes you can't win.
You can off course still use group policy to get around the forced reboots. I'm not sure how well it will works for Home edition but it works perfectly for Professional edition. My Win10 machine has never force rebooted.