This is kind of overstated. Even if everyone went IPv6 and gave every device a public IP address, pretty much every network would have a firewall that behaved just like NAT.
>The author states there is no upside to giving honest feedback of a company in an exit interview, and the one comment I see at the moment which argues perhaps there could be an upside is making the case that the upside is when you personally benefit from stock prices increasing.