Yoda and Ben are in agreement that Luke should confront (being ready to kill) Vader and the Emperor.
They tell Luke not to go in ESB because he’s not ready yet. I see this obnoxious train of thought where people think that they were wrong to do this, which couldn’t be further from the truth. The situation in Cloud City is explicitly a trap for Luke, he doesn’t have any effect on the rescue of his friends at all, he gets his hand cut off, and almost dies. (Of course it’s much better and more interesting for this to happen from a story perspective.)

Then in ROTJ he’s ready and so they encourage him to go. The emphasis is on his readiness and ability to reject the dark side, not a violence or nonviolence issue. Luke doesn’t toss aside his lightsaber because he’s a pacifist (see - the rest of the movie before that) but because he realizes he is playing into the Emperor’s game by becoming angry and vengeful in his violence. He doesn’t mope around about Vader tossing the Emperor either, or his friends blowing up stormtroopers and TIE fighters. The question is motivation, not militancy.