The hardest part of putting animals out to graze is learning how to graze to get the best production of forage off of your land. How fast the animals eat, what they eat, how much damage the hooves do to the ground, and the weather are all factors.
|picture cropped from a larger one at sugarmtnfarm.com|
The grass in this picture is less than 1" tall, and is sparse. there's a fair bit of rock and bare dirt showing in the picture, and honestly, this looks overgrazed to my eye. Why do I say that?
|Colorado state university pasture management|
|Rain crow ranch, picture source|
In the picture above you can see cattle to the left that are on new ground; just grazing, and a grazed area to the right. With a rotational grazing system - which requires a fair bit of work, both with extra fencing and extra management to move the animals from place to place on time - you can keep your forage in good condition, and double or treble the amount of forage actually produced.
Most of the folks that I know that manage animals on pasture don't consider continous grazing to be a best-practice. It is simpler and cheaper - less fence, and less labor - but the results aren't as good as is possible with even a rudimentary rotation system.
As always, when you see something promoted on the internet, take it with a grain of salt.