No. Mine come off at lvc usually between 3.3-3.5 depending on the cells/packs/esc. My traxxas vxl-3s runs them down lower yet. I think it's cut off was like 3.2 or 3.3. I don't use it anymore, almost all hobbywing now and I set them to whatever the "middle" setting they offer does.
The ESC is what controls it. Many older (and likely some current brushed at least) esc's don't have an automatic shut off. It's typically referred to as LVC - low voltage cutoff. If your ESC doesn't have this feature, or if you have it disabled (which many allow for NiMH use), it will run a pack...