The situation and plot of The Phantom of Kansas doesn't seem to have much to do with teleportation though? It doesn't look like Phantom of Kansas features a world with teleportation as a means of transportation, so I'm not sure what relevance it has to the discussion of teleporter technology since no one actually teleports in that story. Also, it makes it clear that there's a break of consciousness between one body to the next, but most people view teleportation as an instant thing that you're aware of the whole time. I accept that the premise in Kansas is similar, but people seem to use it to change their sex and appearance but keep their memory, or use it to restore backups of themselves if they can afford it, not get from point a to point b. When the question of "would you step into a transporter, like the one in Star Trek" is brought up, then it feels like moving the goal posts to bring up all these other examples of things that aren't technically teleporters, or to talk about what a "real" transporter would "have" to do.

The transporter, as shown in Star Trek, and the more generic teleporter, doesn't kill you and create a clone in your place unless something goes wrong. To believe it does says more about what one thinks of the metaphysical and spirituality than it does about science.