It’s worth noting that there are a few bed leveling methodologies:

• Full manual, such as the stock enders of yore
• “Automatic leveling” without a means of actually getting the bed in plane with the gantry. An ender with a touch sensor falls into this category. So does the X1 actually, since the three lead screws share a common z motor. As the bed gets out of plane with the gantry and/or your bed warps the printer will compensate. Ideally the bed and gantry are designed in such a way that they can’t become that out of plane (for example, the bed is fixed)
• “Automatic leveling” with a mechanical mechanism to get the gantry and bed in parallel planes. This is what Vorons, Rat Rig, etc do. They’ll also benefit from a bed mesh, since most beds aren’t perfectly flat