That's a pretty silly idea. So anyone working for Walmart is a monster? Can't be a good person and just taking the best job you can find for yourself and your family?
One data point, I don't believe I'm a monster, but I do enjoy my Walmart job.
The grocery store employment market is pretty different from the sw engineer market. I'd be far more comfortable judging someone's choices when they.. have a realistic alternative.
You cannot effectively influence change in a community you aren't a part of.