Often people think owning cattle and putting them on some grass is going to be easy. You can just leave them to fend for themselves and in a year you get a paycheck.
Close to where I live there are people that use both high management and no management techniques to raise cattle, and you can see it in the animals. The ones that give their cattle endless treats are at the opposite end of the spectrum from those that don't worm their animals, and an animal owned by one is butter-ball fat and won't breed, and the animal owned at the other end looks like a sack full of deer antlers and has no teeth.
Everything being advised is a crap shoot... and it's up to you how to use the information... but the sweet spot where most people make money is closer to the high management style than the other. Mainly in that they pay attention to their animals, and not so much that they spend a lot of money.