Personally, I'm not anti PB. I have family members that have owned them for as long as I can remember...
I find them gawdawful ugly, not all that "sharp", and worthless for what I like to use dogs for, but that's a different discussion.
I did find two things interesting about your post though.
Until you can find me some hard evidence that pitbulls are naturally aggressive towards people at all time, i'm not buying your opinion.
At all times? Really? Is there any animal in the world that's aggressive towards people at all times? That hardly seems like a reasonable...
This part interested me too.
...has encouraged unscrupulous breeders to produce puppies without maintaining the pit bull’s typical good nature with people.
What's the long-term effect of that?
In the end, I'd consider the PB to be a dangerous animal. I don't think it's a stretch to consider MANY dogs to be dangerous animals. Some more-so than others, of course.
Now, is the PB as dangerous as a car, a flight of stairs, or a wet or water-filled bathtub (or bucket)? Probably not.