Risa

Agree for Occam's if someone is actually suggesting they are replaced nightly or your last Thursdayism, but as for conceiving of parallels to a made up teleportation technology and its philosophical implications, is the break in consciousness/self awareness for sleep not a reasonable comparison?

Occam's razor is just one tool though, not an end all be all answer. Complicated things happen.

I'm not sure it's really the same thing, because it's already pretty clear that something happens to consciousness when one is asleep, since that period is experienced differently than when awake, positing something like that about the nature of what happens to it doesn't add a bunch of unnecessary complexity the way that assuming the universe just randomly assembled to look far older than it is does.

Cloning isn't necessary. Every night your stream of consciousness could actually and permanently end and a new one is created upon dreaming/waking but you would never know it. This could be how it really works though we can't know that. You could continuously lose and create new consciousnesses every firing of a neuron.