I'm going to have to say I generally agree with "anonymous" but just for giggles let me add in my own two cents.
I was watching this interview with Maynard back from the Undertow days, and he was commenting on the band's music. He said that people need to realize the bad in our world is just as important as the good, yet many people have a hard time understanding that and instead just label them as a pessemistic band. "Don't just call me a pessemist, try and read between the lines." ~Maynard, Aenema
What I'm getting as it this just Maynard's justification for why he focuses on the bad in the world. He speaks of this voice "beneath the cold black water," that's sucking him under into some sort of anesthetic state of mind, where the bad in the world is no longer important. Fuck it. Let the world fall apart, as long as we're happy who gives a flying fuck? (Sarcasm intended)
Maynard, along with the rest of us, are "weak and numb and insignificant," unable to overcome this machine creating this anesthesia over society; the media, the government, and fundamentalists who want us to ignore the hatred in the world along with all of its sheer stupidity, and misguided anger. This machine pulls us back into the undertow, back under the water into a state of euphoria, where the only well-being that matters is our own.
"It seems there's no way out of this undertow."
