You don't think the punishment may be a bit... draconian?!!!
The numbers are the max allowed for that indictment, sentences that spammers get are a ridiculously low fraction of that.
I do think spamming should be punished harsher than murder, as the cost for the society is greater. Somehow people underestimate the harm if it is spread among many people. Like: you build a coal power plant that reduces the lives of 100k people by a year each -- you've committed the equivalent of more than 1000 murders, yet don't even get a fine for that.
On the other hand, I find the count of "more than 1 million spam emails" to be suspicious. A decade ago, spam response rate was 1 in 12.5M, and I'd expect it to be way lower today. A spammer doesn't spam "for the evulz", he spams because it is profitable. A billion mails per campaign is a low figure, and a spammer doesn't build the infrastructure for just a single run.