I found https://www.youtube.com/watch?v=a_rAXF_btvE to be more balanced than the LTT video, but I think it mostly depends on your expectations of the cameras. The videos themselves are stored locally, not in the cloud. But if you have thumbnails turned on in the notifications, then the thumbnails have to be stored somewhere temporarily (I think this is an Apple/Google requirement), and they're being stored on a cloud server rather than in your home network (which would require opening up a port).
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I found https://www.youtube.com/watch?v=a_rAXF_btvE to be more balanced than the LTT video, but I think it mostly depends on your expectations of the cameras. The videos themselves are stored locally, not in the cloud. But if you have thumbnails turned on in the notifications, then the thumbnails have to be stored somewhere temporarily (I think this is an Apple/Google requirement), and they're being stored on a cloud server rather than in your home network (which would require opening up a port).