Freezer burn is nasty and ruins your food. If I discover a package in my freezer with only a small area burned, I will try to remove the damaged area first before I give up on the whole package. You need to use your best judgement. A good way to avoid freezer burn is to either rewrap or add a second wrap to your foods.
Many people assume the packages that foods, such as meat come in, are o.k. for the freezer.
These are only a thin covering to keep the meat fresh. These packages need to be removed and the contents rewrapped in foil. I do freeze in the store wrappings if I only plan to freeze for a few days or up to a week. It is still a good idea to place any meat in freezer bags. You always want to avoid cross contamination of any food by having juices leak from one food onto another.