No, an alias will only give you pseudo-anonymity. Even trivial analysis like counting which words occur together frequently in your writings can reveal with very good accuracy any other alt of you, so the available information of you is basically everything you have shared online with enough accompanying self-written text.
The problem is that it uses WebSockets in a completely braindead way. There is absolutely zero reason to waste server resources on that for every single user. Of course it fails to scale..
Scala is quite well designed.