Ford is out there murdering people in unnecessarily cruel ways and we're asking if he is good
Like, I'm not just going to murder you Theresa, I'm going to have your lover bang your head against a wall
He's a narcissist with a god complex, and even when he's trying to "do good" he can't resist the urge to make it his story and inject himself directly into the narrative.
You might can rationalize your way into some moral justification for some of his actions, or his plan to help liberate his creations, but there's no way to reason your way into him being a "good guy."
And tbh, I think such a classification would betray the point of the shows exploration of human nature, and the duality of our behaviors, where the man in black and William are the same person...or the guest that come to Westworld to rape and murder are doctors and teachers and pastors and moms and grandfathers when they go back home.