Well done for getting rid of this one, OP. He was clearly an arsehole with no regard for your welfare or safety. Who the fuck does that on a first date?
I think the whole choking debate is very interesting and, unsurprisingly, it always draws such strong reactions.
I used to quite like DP applying pressure to my neck, not because I wanted to feel lightheaded or degraded, but because I enjoyed the sense of being overpowered. My motivation came from the same place as being tied up. It was always something we discussed extensively and agreed on beforehand. I'm not a "cool girl", I'm a 47 yo woman who is confident in what she enjoys. I don't tolerate abusive behaviour.
Then I read a 42 page paper published on Fetlife about choking and strangulation in the context of a safe sane and consensual kink. The conclusion was that the risks of permanent injury or death could be mitigated to an extent but not entirely removed. It referenced a married couple who regularly waterboarded until, one day, she accidentally gave him a permanent brain injury.
From that point on, I made it very clear to DP that he can put a hand on my throat, in much the same way he'd wrap a hand around my wrist, but there was to be no pressure applied at all. It's not a risk I'm willing to take.
Many posters have correctly highlighted that violence to women is an increasing feature in porn and I don't doubt that an entire generation of young men are growing up to think that violent sex is "normal". However, I think it's too simplistic to argue that any person putting a hand around a partner's neck is a porn obsessed murderer in waiting.