I think the self-esteem connection is an interesting one and the people that created the eSteem app surely noticed that, but I don't think the creators had that in mind (though I really don't know). I think they just wanted Steam misspelled in a cool way and that was what they were thinking about.
The matrix is a fun idea, but I wouldn't say it's too descriptive about what this really is.
And there are certainly many people who have no clue about the permanence of the blockchain.