This isn't the first time I've heard about this kind of technique. Last year This American Life had a segment about a study in California showing that people's views concerning gay marriage were changed by these kinds of conversations. Unfortunately, a month after the segment aired, one of the study's authors asked it to be retracted because the firm running the survey had been
falsifying their data.
It sounds like the study that Vox is citing here comes from those same researchers running their study again, which got its own segment
on the podcast.
I think there are two things wrong with how this story is being framed by posters in this thread. The first is that this is putting the onus on minorities to suck it up and pretend to be happy about all this shit, and I don't think it should be read that way for two reasons. One is that anyone can have these kinds of conversations. As the study points out, the identity of the canvasser did not effect the persuasive power of the conversation. If you are not a minority, but you care about fighting racism, you can have these conversations yourself. In fact, considering that you're more likely to be dealing with people with these attitudes, you have a greater obligation than the average minority. The other reason (and this is tied into the second larger thing) is that the conversations in the study weren't being had in response to transphobic incidents: they were presented completely out of the blue. I would suspect this kind of conversation would be less effective in response to someone calling you a racial slur, and that those individuals would be more difficult to reach regardless. Deal with racism you face in whatever way is healthiest for you.
The second thing wrong is people oversimplifying the technique based on the headline, as if to say "We can just stop racism by not calling people racists". That's absolutely false. The effectiveness of the technique depends on creating empathy while still conveying your perspective. The article emphasizes the importance of listening and allowing the other side to present their view, of looking for common ground in how you frame your argument. That is hard work, and it's especially difficult to achieve over the internet, where you have no indication of how invested anyone is in actually listening. I'm all for making the internet less negative, but real results for this are only going to happen face to face with people, in conversations presented outside of responding to a specific racist act.
That said, I do truly believe this is a worthwhile thing to do. Some of the views I see here remind me of other conversations about prison reform. And the misunderstandings are similar, too. Ultimately the question is how we create a country where everyone respects everyone else, and answering that means worrying about outcomes above worrying about proper retribution. But that is not an excuse to dismiss the problem and push it on others - it's a call to confront it head-on no matter how uncomfortable that may be. Empathy does not require accepting bigotry.