Well to be honest, I was actually expecting to see a lot more people be upset with how Luke was used in this film, namely because of how many people I remembered posting (after TFA came out) that they couldn't wait to see the type of action sequences they would have Luke involved in for the sequel, let alone on how far his lightsaber skills have progressed since ROTJ.
Plus, I don't think anyone was expecting for him to die in this episode. The last film of this trilogy sure but in the middle of it? And to have died in a way where he never corrected his mistakes.
As a self contained/elsewhere story, I can appreciate this take. But in the grand scheme of things and to the overall legacy of the Skywalker mythology, I feel like this film will ultimately be far more detrimental to it than beneficial.
Plus to feed Luke to the guy that already took Han Solo from us is so messed up.