I believe very strongly in individual privacy online. The idea that I should have to identify myself online, even just to the platform, by my legal name in order to engage in discourse is entirely abhorrent. I care very much about limiting the amount of information that corporations like Twitter have about me. Without going on a tangent, I don't trust these organisations to use this kind of data responsibly and I don't trust that the world may not change in a way that will penalise people in the real world for engaging in honest debate online today. It's not hard to find examples of people who have been 'doxed' and suffered real world consequences.