As a long time chicken keeper who does love roosters but also recognizes there really are bad ones I can only say what I have observed for myself. (and yeah I've had a LOT of roosters)
I've had several good roosters, one great rooster and a couple that were .... not worth stewing.
My avatar was a really good rooster I hand raised.
Nature dealt chickens a bad hand for domestication. Chicken genetics are skewed against roosters They are programed to be aggressive, loud and wild and we never really tried to fix that until this last 100 years. Heck we exploited it. Also unfortunately, they are set up percentage wise to be the standard mammalian 50/50.
My worst rooster was a purebred Orpington, good bloodlines, hand raised from an egg, he was carefully gentled, handled from hatching, treated with great kindness, never abused, never improperly challenged by humans or other roosters and he was pure psychopath. I found him attempting to kill my best hen. Barely saved her life. She was docile, sweet and productive. In no way did she challenge the little bastage. He just felt like killing something.
My best boy was a random mutt, grabbed out of a large flock of wildish chickens solely because he was the only one nearby and gifted to me by a frazzled friend who said "I got way too many, you need a roo? Want this one?". Best bird I ever owned.
Raising them right? Naw. Proper handling? Naw. Genetics? Maybe. Luck? Heck yes!
It doesn't sound like you've ever actually tried to work with any rooster who behaved aggressively, though. From what you've said there, it sounds like whenever you get one who doesn't do what you want, you're convinced he's "bad." You don't even try to understand his behavior, just label him as a "psycho."
As you've never learned any techniques to work with roosters (very few have, this is definitely a new approach), it's not at all surprising you think luck determines your relationship with a rooster. When you've already decided that some are born "good" and some "bad," you lose the ability to empathize with the "bad" ones. But when you approach rooster aggression instead with a problem-solving attitude, you tend to be able to solve the problem.
The difference with this approach is if a rooster becomes aggressive, you don't say, "Oh I was always kind to him and raised him right, therefore he's just bad." You say, "Interesting. I wonder what's going on with him - Let's work on figuring it out."
Hence, you have "luck" that gives you a good or bad rooster, whereas I have never in my life met a bad rooster. Have I had some pretty challenging behavior problems? Yes. Have I been able to fix those behavior problems? Yes.
Training roosters isn't for everyone - you really do have to be motivated to put in the effort of learning how to train them and the time to do it. But if people aren't willing to do that, it doesn't make their roosters bad.
I could be wrong - perhaps if I met some of your roosters, I would have found myself in the same place you did, but I've always found them to be pretty malleable with the right approach, even if they initially were trying to kill me.