There are definitely times when root is still needed in the Android world, especially for features that use hardware that is already there but have been disabled by the manufacturers for one reason or another. The fingerprint sensors in Sony Xperias come to mind, and so does call recording on recent OnePlus devices. The latter is a feature that is only enabled in some variants of the OnePlus 3T. Fortunately, you can also get the same functionality in other models as well. The only catch is that you need to be rooted.