Somebody should nominate this guy for a Darwin Award. When your dog attacks people or other dogs, it’s not being “protective”, and it’s not “telling it like it is” to say it is. It’s aggression, and you should never tolerate aggression from your dog. The dog is at least as likely to attack you, a family member, or a friend as it is to attack a burglar or mugger- so having a “protective” dog isn’t making your family safer- quite the opposite.
I’m just sick of people making excuses for their aggressive, badly-behaved dogs by saying they’re “protective”.