Brambles, like bracken have their place, but make a lot of themselves. They do protect growth and provide food for dormice, nectar for butterflies and bees, and are useful as cover for small animals.
When we cut back brambles, perhaps for a deer fence, or because we want to keep an area open, we do it with a flail head on a brush cutter. Don't try this unless you are really used to brush cutters! This knocks them back for at least a year.
We then find that in our wood, we get wild raspberries coming back as well as various other plants and flowers. The brambles do suppress them, so the answer is probably have some bramble areas, but don't let them take over everything. Regrowing coppice will also suppress bramble but not kill it.
Chris W