It’s amazing how people have selective amnesia. Yes, Luke did throw away his saber in ROTJ, but a few seconds before, he was about to kill Vader. And a few minutes before that, he’s prepared to “strike down” the Emperor, only to have his faithful apprentice intercept the attack.

This invasion of privacy stuff is nonsense. Luke isn’t the NSA. Was it an “invasion of privacy” when Vader mind proved Luke in ROTJ? As for Luke entering Ben’s bedroom, sure, it’s a little weird, but I don’t think the temple has high expectations of privacy.