Both manslaughter and murder count as "killing." Not to mention, the dangers of drunk driving are well-known by now, and he still decided to drive drunk. Actions have consequences, and now two people are dead due to his entirely voluntary actions.
Sex crimes in general are routinely downplayed as it is. Something like 99% of reported rapes don't lead to prosecution. And men (it's overwhelming men who rape) know this, and know they can basically get away with it. It's disgraceful.
If you’re talking about alcohol as an excuse for sexual assault, I agree, and I don’t know anyone in my social circle who wouldn’t. If you’re unable to control yourself on alcohol, then don’t drink. If you drink and end up assaulting someone, sexually or not, that’s entirely on you and you should be punished for it. Don’t be a Brock Turner. The legal system may have double standards, but the rest of us shouldn’t.
It was drilled into us at college and in the military that a woman can not consent if intoxicated, no matter how sober they seem. However, this might just be a zero tolerance policy to better control those without good judgement,
It just always seemed weird to me that two people could drink the same amount, both be engaged and consenting at the time, then the day after still be classified as a sexual assault.
Your use of quotations seems to imply that you're saying that GP used the word "killing". That's incorrect; the word used was "murder" and, as GP already said, manslaughter is not murder.
I might have misinterpreted your use of quotations, but in that case then I don't understand the point you're trying to make.