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.
I would call that a character arc. These things didn’t happen in a random order. Luke get’s goaded into using force, first by Palps, then by Vader to the point of almost killing Vader. Luke realizes he’s about to follow in his father footsteps, and composes himself, tossing away his lightsaber. He’s learned a valuable lesson, and passed the test. A test he then again fails in TLJ.
How did he fail that same test? Aren’t his actions just consistent with how he was portrayed in ROTJ? A person doesn’t stop making mistakes just because they make the right decision one time. As you pointed out, the Emperor goaded Luke into striking. Vader goaded Luke into striking. He seems to like striking and be easily goaded and then later comes to his senses. How then is going to Ben’s hut to confront him and freaking out about how far he has fallen and igniting his light saber out of character. It seems totally in character by the very example you have provided. That is his MO. React on instinct and then let his wisdom rein him in. You have just proven with your own examples that Luke’s actions in Ben’s hut are 100% consistent with ROTJ Luke.
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?
Eh, yeah, Vader is the villain. Either way, Luke was fully awake and aware at that point in time, unlike Ben Solo.
And you think it isn’t a Jedi Master’s job to keep tabs on their students? Asleep or awake it doesn’t matter. Being the master implies consent to scan your students for hints of the dark side. From the setup we are given, it seems like Luke fell down on the job on this and had failed to keep tabs on his nephew and decided to correct it (again acting on instinct and then letting his wisdom fix things) by confronting him, found him asleep and took a peek (Yoda’s dialog in TESB indicates he was keeping tabs on Luke for years, likely both asleep and awake) as a master should do and was horrified at how far he had fallen and how complete it was. He had a vision of a possible future (ever in motion the future is) and ignited his lightsaber on instinct (as Ben taught him - “Let go your conscious self and act on instinct”) before his wisdom took over, but by then Ben was awake and the damage done. And Luke runs off (as Ben and Yoda did, and as he himself did in TESB and ROTJ) to find answers at the first Jedi Temple. His failure was not just in igniting his lightsaber, it was in failing to see the darkness in his nephew. I was failing Leia. For a man who grew up an orphan, found his father and sister, redeemed his father (and hopefully has conversed with his force ghost though that is pure conjection) and then fails his sister in the one thing she needed his help with… can you just imagine the level of anguish that would cause? He failed both of his living blood relatives. Not to mention his best friend.
It is not so much that I don’t respect your right to your opinion, it is that I am confused how you got there. Everything about the Luke from the OT that I grew up with points to this being a logical offshoot and a story that makes sense in setting up the ST.