The sentiment of this poem is expressed extremely clearly, which is why it's so popular. We're not all idiots, illiterate or suckers. The last stanza clarifies and reinforces the rest of the poem. Any alternative interpretations of this poem are from 'smarter-than-thou' morons who want to show off how they are more educated and intelligent than you.
1. https://www.theatlantic.com/technology/archive/2014/09/every...