This violence issue is extremely rare and hugely overblown on the red board by shills trying to bring down people's expectations of service levels. If it was so dangerous, word would get around and new girls wouldn't be pouring into Canada day after day as they are now. To the contrary, they are incentivized to come and make hundreds an hour because they hear these johns think a girl is top tier for holding their hand and smiling in the session.
Saying "Treat her well" and the sentiment in your signature is just empty virtue signaling. I agree with
@norubberz that a psycho who would assault a girl is going to do so regardless of what he reads on teh boards. It's better that the person tells the truth of what they experienced subject always to the caveat that YMMV rather than make shit up.