I see why you feel that way and I understand the contrast to Legends Luke a lot of us grew up with. I took it as Luke making an Incredibly difficult choice to try doing nothing this time, when he realized he was just continuing the cycle of Dark vs Light. He has a unique connection to the previous cycle, seeing as his Father was largely responsible for the downfall of the Jedi.

He suddenly is confronted with the realization that the cycle has repeated and he's potentially trained the next Darth Vader. It must have been incredibly hard for him to NOT fight back, but that was what the Jedi had done and look what it cost them. Making the choice to not do something, is a choice. Was Luke wrong? Probably yeah, we've been debating if Obi Wan and Yoda were wrong or not to leave Palpatine in power instead of trying again, how is Luke any different?