That’s not right. A smart doorbell camera doesn’t record all the time. The reason being simple, a limited storage. If a doorbell camera is to record continuously, a cloud storage would be required for that. Usually a cloud storage comes with a paid subscription only so if you’re willing to pay more extra storage then it’s totally possible for your doorbell camera to keep recording all the time. You’ll still be notified every time the motion sensor detects anything. The feature of recording continuously all the time isn’t necessary at all, it’s just an extra step.