Applying security updates by default would solve that problem just as well. From the user's point of view, there is no good reason to force updates against a user's explicit decision, and there is no good reason to push non-security/stability updates even by default.

The only time forcing all updates in that way makes a difference is when Microsoft wants to override a user's deliberate preference not to have their system changed in that way. This cannot possibly be in the user's interest, only Microsoft's.