Whilst it is true that it requires more work, blanching almonds can be easier on the digestive system for severe food sensitivities than simple soaking, however blanching almonds may not be required for everyone.  It is a preferred method for making almond milk for those who are more prone to food sensitivities as this will completely remove the phytates.  Removing the husks on almonds also make for a nicer homemade almond milk.  It is very unlikely that commercial nut milk producers will have taken the time to activate their nuts or remove the husks, not to mention any additives and preservatives within the product ingredients.