port forwarding/firewall issues that most people don’t know how to deal with

This sort of thing makes me want to tear my hair out when I hear “Why bother rolling out IPv6 when IPv4 just WORKS!?”

NAT, port forwarding and the problems they cause are seen as expected, just the way the internet works instead of the dirty hacks they actually are. Most people aren’t old enough to remember the time when everything connected to the internet had a routable IPv4 address.