Are you serious??? The ONLY way that the injuries mentioned in that stupid article could happen is if the collar is used INCORRECTLY period! They mention to use a harness , REALLY?? Thats the whole reason she is in this mess in the first place, the dog has been allowed to do whatever he wants, and when they put him out of his comfort zone, he retaliates by biting, he doesnt want to do it their way and now he is winning because they are afraid to deal with him for the fear of being bitten. And i do feel that neutering him WOULD help in this situation because it would take some of that testosterone away from him, he is acting all manly and needs to be takin down a peg or two, it is not an instant fix either , it takes a few months to see a bit of a difference.
Try using it correctly on yourself for a week or two. Let us know how the doctor visit goes.
If you are really wanting to stamp your feet in then please provide creditable evidence to support no injuries if used correctly.
The reason why she is in this mess is because she did not recieve creditable advice and training, who use updated information, knowledge, science and facts. Have you ever heard of simply stop walking when being pulled....turning the other way, changing directions, giving prasie for when they get it right, what about clicker training....no, lots and lots of great training advice for free out there if you explore the updated sites.
No dog needs to be taken down a peg or two you certainly wouldn't like it so why treat your best companion like that? Neutering will not resolve anything if the behaviour is already there, you need to counter condition his behaviour and then when he is becoming more balance then you neuter. That is why we dress females in the middle of their cycle, when they are more balanced to help maintain their temperment.
I am not going to stay and argue with you, you have the right to your own opinions. I've been in the dog world long enough and gone through all the stages of dog training and I know what does not work and punishment is not the way to do it. "Teaching" with "consistentancy" with "patience" and "praise" wins above all else.