The problem I have with RustDesk is that self-hosting the server forces you to accept zero authentication (meaning anyone can use it to host streams for free),

The problem I have with RustDesk is that self-hosting the server forces you to accept zero authentication (meaning anyone can use it to host streams for free), so you end up having to run it through a VPN which also decreases performance and latency, and makes it unusable as an easy IT help tool like people have been doing with VNC since forever (unless you relegate to using the slower public server controlled by who knows what). And since the paid pro version does have authentication, I think it's unlikely to ever show up in the free version.