This critique appears to be projecting its author's desire for a solution to the EHR compatibility problem on to Apple. I haven't seen anything from Apple indicating that HealthKit is the answer to this problem.
HealthKit provides a way for iOS devices to integrate health-related device data for use by the iOS device owner, no more, no less.
HealthKit provides a way for iOS devices to integrate health-related device data for use by the iOS device owner, no more, no less.