It's called a neopronoun.

The choice of the specific one makes it look like it's third person, but that's not the way it's used. While strange in implementation, it is a variation of the general concept of genderless speech that has been around for a few decades at this point.

If you change the specific one, drag, to something random like dey, it's easier to parse. That it's similar to the user name makes it more confusing than other options might.

It's a lot to wrap one's head around. I still can't manage to think that way, and suspect I may never be able to. I can't even manage to use that type of pronoun reliably in short bursts. It is, however, a very interesting concept that makes examining our language structure an informative process.

As an example, take a look at your own comment. It starts off aggressive, and making assumptions. Why? While the atypical pronoun usage can be confusing, it obviously isn't a personal attack against you. So why does that confusion trigger aggressive word choices and structure? It's at least partially because of dissonance stemming from unfamiliar language use.

But, why does that dissonance result in a desire to go after someone that was talking to someone else? Why does an unfamiliar form of communication shift a brain from just scrolling into aggression? It's a fascinating thing once you step outside of the knee jerk reaction. Once you start looking at what's happening inside yourself, and pick apart the chain of reactions, you see some inlaid patterns between language, expectations, and behaviors that's enlightening.

See, we have this proclivity as people to reject the strange. Often on a very personal level, even when the originating stimulus isn't personal at all. Again, the comment wasn't directed at you. It's obvious from the structure of it that it was directed at me in specific. It is also obvious that it was part of a conversation between two people familiar with each other.

It's the equivalent of walking down the street, hearing two people talking, and getting upset at how they're talking. It's unlikely you would roll up to two people babbling in pig latin and say "what the fuck are you talking about" to one of them. I mean, I assume you're not that big of a dick, nor stupid rich enough to ignore the risks of speaking like that to someone you don't know. Maybe you would do exactly that. But most people wouldn't.

So, why would this be any different? See? What a fascinating opportunity for increasing one's understanding of themselves