Yeah, hard disagree. If you want to argue that Luffy, the Strawhats, and many of the supporting cast aren't as "good" as they tend to be portrayed, that's one thing, but Blackbeard is another matter entirely.
Murdering Thatch was evil, full stop. If he wanted the Devil Fruit Thatch had found, he could have tried talking to him about it or even simply stealing the fruit before resorting to murder.
Pillaging Drum Kingdom can be written off as simply "Pirate Behavior" used to start building a name for himself, but it's still distinctly on the darker end of the spectrum.
Given his plan to join the Shichibukai, his hunt for a 100,000,000+ bounty isn't inherently "evil" in and of itself, but he had to know that handing over Ace to the World Government would result in a major clash between them and Whitebeard. Whether he could have anticipated the full extent of what happened at Marineford is debatable (I'm not sure if Teach knew Ace's bloodline, and thus how valuable his execution was to the WG, in advance), but at a minimum, he knowingly set up a head-on collision between one of the Yonkou and the Marines, for nothing more than a shot at using his new Shichibukai status to get into Impel Down, recruit some of those very same heinous criminals to his crew, and then promptly turn around and aim straight for Whitebeard's head - a man who, by all accounts, was a father figure for him - for the purposes of stealing his DF and usurping his position as Yonkou.
And since doing so, he and his crew have set up an operation for hunting down other DF users and killing them, specifically to steal their Devil Fruits.
Those are not the actions of a good man, no matter how you try to spin them.
No, I was talking about strictly in the context of Impel down.
Luffy let out hundreds of dangerous deranged criminals from the prison. From level 1 to level 5.
Not all of them were peace maines. I am sure a vast majority of them were shitty people who deserved to be imprisoned.
Teach had the most dangerous people in the world kill each other and then he selected the remaining ones and reigned them in. They are currently under his control and do as he wants.
Ask yourself, isn't it curious that we have never ever heard of the BB pirates actually comitting evil deeds among the normal populace. Oda could have easily added a blurb about how certain islands were suffering under BB rule. But its never happened.
As for Teach attacking Drum. As far as we know, there were never any civilian causalities. Him destroying that town, is akin to Luffy destroying the capital of dressrosa while fighting doffy.
I am not saying he is good. but he is certainly not evil.
Ceaser Clown is an evil person.
Big Mom is an evil person.
Teach….i dont see it
--- Update From New Post Merge ---
Blackbeard spending decades with the WB Pirates, forming bonds of brotherhood with them just to betray them so callously later is pure psychopathy. He clearly is beyond empathy and emotional bonds.
I really disagree with this.
Would you call an undercover cop evil for going undercover?