Having previously lived on a farm, I am well aware of how animals are treated. Just because some documentary filmmaker decided to find some shitty places and recorded the animals' treatment there and then goes to say all animals are treated that way is manipulation, not journalism or entertainment.
Domesticated animals are kept for two reasons: company, and food. Animals, in the vast majority, are only interested in the propagation of their species. Anything that doesn't get them closer to the goal of making little animals really doesn't factor much into their thinking. Domesticated animals do not need to worry about predators, where to get their next meal, or how to find mates. Humans do all of that for them, so their propagation is assured if they just sit around and be comfortable all the time. Sure, they will die when the humans get hungry, but it is a lot longer than they'd live if they were out in the wild, where they'd be food for some other animal who would kill them with a lot more stress and violence than what we humans use.
So, no, I don't think people who eat meat are 'less evolved' than others. If anything, I believe the vegetarians are intentionally regressing their evolution back to the stage where humanity didn't eat meat, many thousands of years ago. That whole 'omnivores are less evolved than herbivores' line is vegetarians justifying their life choice and attempting to guilt others into believing they are right. Fine by me if they want to live that way. When we met, my wife was a vegetarian, and I supported her in not eating meat (more for me!) but, after over a decade of marriage, she now eats a bit of meat every now and then. While she was pregnant with our daughter, my daughter insisted on her eating a lot of meat, which sort of ended her purely vegetarian streak.