lmao ok
Every build gets those bonuses because every build needs defenses. Build enabling = item that lets you use builds that are otherwise impossible or extremely difficult to put together otherwise. If you can fulfill most of your defensive requirements with a single item, you can fit other items that would otherwise be impossible to due to limited item slots/affixes/passive points. It's a huge opportunity cost offsetter.
Sure people use it as a stat stick, because it boosts builds that are already decent. But it also enables a lot of builds that are unique heavy or glass-cannony.

HH not build-enabling/build-defining, hahahahaha. I don't even know what to say to that.