This is a great piece, and I think it's so important that these issues are being highlighted in mainstream media.
As a woman in my late twenties, I do think choking has become scarily mainstream- I have had sexual partners who've wanted to choke me or who've discussed the idea of choking who aren't interested in other (IMO) much safer aspects of BDSM, such as restraint and spanking (which are activities I, personally, genuinely enjoy). But it seems like nearly all men these days think choking and anal are fairly "normal" activities.
I think part of the problem with this is because it's seen as part of "normal" sex, people/men don't bother to research/think about how to do it safely as they would with other types of extreme sexual activity. I'm not sure there is a 100% safe way to choke someone, but there are probably ways to make it safer- e.g. having a system for the person being choked to instantly let the other person know they want the choking to stop. But a lot of people are just experimenting with something incredibly dangerous, and of course it's going to go wrong sometimes.
The same goes for anal too, actually, I think. I do have anal sex with partners, and I do enjoy it- but I am very clear on how I want things done to ensure it doesn't cause me pain/injury, including being "opened up" first and using lots of lube. Sometimes, when I explain this to partners, they become a lot less interested in the idea! The reality doesn't match up to the fantasy, I guess!
I do think there are probably two types of choker out there- people who've bought into the idea it "makes orgasms more intense", and people who get off on some level around the idea that they could kill their partner and are in complete control. In some ways, the first group are perhaps more dangerous because they often haven't acknowledged the risk of what they are doing!
I do wonder if there's a place for some kind of public information campaign around the risks of choking and very violent sex. I also wonder if there's a place for legislating around the content of porn- to perhaps ban the showing of acts that have a high likelyhood of resulting in harm or death.