Within reason, they provide cover and shelter, also a backup food source in lean times. I'd say it would depend on the coverage.
If you have access to a tractor with a front end loader (FEL) cedars are easy to push over since they have a shallow root system, they there are no stumps to wait 20 years to rot away.
If you can push/pull up the PP and place it in piles, then in a year when it is thoroughly dried out, burn it, that way you don't have a ton of dried leaves and stickers everywhere. Just note, any PP leaf pieces touching the ground will take root. I was on a lease outside Sterling and pile and burn is how they do it there as well and bother, they have the prickly pear!
“Never be afraid to try something new. Remember, amateurs built the Ark, professionals built the Titanic”
Friends don't let Friends drink and post.......
The first 5 day's after the weekend, are the hardest....