Any end-user tech that requires a listening port on the internet will: A: Never work, because NAT isn't going away (even with increased IPV6 adoption). Even lo

Any end-user tech that requires a listening port on the internet will: A: Never work, because NAT isn't going away (even with increased IPV6 adoption). Even locally it will work less and less because "block all incoming connections" host firewall configs will eventually become the norm. B: Be a security risk waiting to happen (EX: Chromecasts using UPNP to expose themselves to the internet, which were immediately blasted with broadcasts from one of PewDiePie's wretched fans).