One would think he would’ve been better off 30 years later as a Jedi Master. That’s what fans of the OT wanted to see. A grown Luke that’s wiser and is a much better version than his former self.I hated Luke in the original trilogy. I dislike most of the elements in the original movies, but specifically hated Luke.
That said, I felt like the Luke we got in TLJ is completely in line with who he always was - petulant, impulsive, emotional, and someone who blames everything around him when his decisions go wrong. His self-doubt was always self-inflicted. I also believed that his final "battle" (and sacrifice) is completely in line with who we always was while also redeeming his worst traits. He didn't have a face to face battle with his greatest failure; he actually learned, checked his emotions, and "out emotions" Kylo by maintaining his control.
Because he didn't beat Vader and Palpatine. He outs emotions them by having empathy (and whining like a baby).
I get that it wasn't the final stand that fans wanted, but it was the right final stand for Luke.
Instead we got a cry baby failure that couldn’t even face his problem head on and actually be there. Not even going for his sister!!!
Since you’re not a fan of the OT though I get it. Just understand that what you wanted is the polar opposite of what actual fans of Luke wanted.