I think he's more referring to the problem, where your email sent from a small(ish) provider is flagged by the big boys as spam.

Google is quite notorious for their ever changing goal posts regarding email reception. And if your mail is flagged as spam (and based on my own experience the AI behind it is not very intelligent) the only thing you get back is an automated response with completely and utterly useless "support" links.

So while spam may be solved on an individual user level, it's certainly not on the meta level.