They are bread to fight and so they aren’t family pets. At least until we breed the instinct out of them again

Bred*

All dog breeds have the ability to fight. Chihuahuas notoriously test lower on temperament tests than Staffordshire terriers and have chewed the face off of babies many a time.

Yes, and maybe we should ban chihuahuas too. But pitbulls have chew random people in public spaces all the damn time.