Which is a completely valid reason for it to exist. The fact that it also lets you tag from range is a bonus. Heck, I’ve outright killed BfA mobs with Heroic Throw just from it proccing damage effects. Plus it’s a core ability for Prot, and in this era of unpruning why should it be spec specific.
Honestly, I don’t get why so many people have a hangup about Heroic Throw and keep trying to make it into a cooldown or rotational ability. Warriors used to have a ranged weapon slot for a gun or thrown weapon, and it was a very handy utility option to have. When that got taken away Warriors got Heroic Throw instead, which did basically the same thing but without being a gear slot. That’s it. That’s all it’s supposed to be. A replacement for a stat stick that let you plink away at a target outside melee range. And its existence is entirely justified by being just that and nothing more.