People said the very same about GSDs, Rottweilers, Dobermanns and other such dogs before. The proper approach has seen them become pretty decent dog breeds, without the need to ban them or end their existence.
On the whole, none of those breeds has ever really been a problem - there have been a few attacks and issues in the past, but nothing compared to the BullyXL.
And this is the point you don't seem to understand, or have been ignoring - it all boils down to probability.
The probability of being attacked and killed by a Dobermann is low, the probability of being attacked and killed by a BullyXL is much higher..
I'm inclined to say go ahead and ban the XLBs, just to see what mother ****** of natural perversion takes its place. I imagine all the low-down gangstahs and set trippin' bangers will be down wit' their homies, as they walk their pet Balrog (so don't arouse their anger, fool).
Banning BullyXLs on it's own isn't going to solve the problem, I already said that - we need to ban them, AND bring back licensing, mandatory insurance and we also need to regulate breeding - where we don't just let people cross different breeds to create hybrid abominations to get around the rules.