All-told, Rise of Iron includes three strikes, private PvP matches, three/four multiplayer maps (depending on your console), half a dozen story missions, a raid, a ton of new pieces of armor, weapons, and ornaments, and an unknown amount of new quests. The Bungie team has said many times that their primary focus with Rise of Iron has been to provide more content, and to a degree, Rise of Iron fulfills that goal.
But yes - people still play Destiny, and with the Rise of Iron expansion kicking off a third year for the shared-world shooter, there has never been a better time to experience the ever-growing world of the Guardians. If you read the comments written below any Destiny article, you’re bound to find someone write, with enmity, “People still play this game?” Two years after the somewhat tumultuous launch of Destiny, it’s a fair question, especially as other video games have launched with the hope of replicating Destiny’s success, and have all but fizzled out since.