Comment by orbital-decay

>If anything, NAT has saved millions of wildly insecure devices running unpatched old Windows versions from getting pwned the second they connect to the open internet.

I don't think NAT being a janky ad hoc firewall does anyone a service. It shields the devices enough to keep the developers oblivious about security, but not enough to stop them from connecting to arbitrary hosts. This perpetuates the humongous botnet ecosystem.