it’s not centralized, you can choose your smp, xftp and webrtc ice servers, or you can install them in your own server
so is a decentralized chat application
so far i was able to do calls and videocalls to everyone (i have 8 friends there), but i won’t say that the calls are stable, the application needs time to stabilize, and that’s what they are doing, you can check the the GitHub page or chat with the developer if you want to know more
i think that a gender neutral language can be inclusive for some people but at the same time can be an exclusive language, because can be confusing for other people, is not obvious that it’s the right choice, that’s my opinion