Several come with perks that increase your accuracy when firing from the hip, which is an added bonus. In general, auto rifles don't have the range of scout rifles, which means you need to get right in your enemy's face, but many of bonuses that reward you for doing so. Destiny 2's collection of auto rifles make this very easy, and auto rifles are subsequently a go-to in PvP, where experts wield them like scalpels. The beauty of auto rifles is, of course, the ability to just hold down the trigger and get in a huge number of shots very quickly - provided you can hold the reticule on the target. The most familiar and basic weapons category remains one of the most effective.
Destiny 2 fields so many excellent auto rifles that picking the best one is agonising.