Is it any different to un-bolting something like the ABS pump on your car to replace it with another? On the one hand, that's an obvious and trivial operation

Is it any different to un-bolting something like the ABS pump on your car to replace it with another? On the one hand, that's an obvious and trivial operation - undo 4 easy to reach nuts securing the pipes to the pump manifold body, undo 2 bolts holding the assembly to the car body. Fit new pump and do up the fasteners. If you have the hand-eye co-ordination to line up a wrench on nuts and bolts and you have the minor strength needed to turn these then you're capable of the operation. Except... now you've got air in a crucial safety system affecting braking and stability and no amount of bleeding the brake system will help. You need to actuate that pump while toggling each solenoid in a particular order to clear the air. We wouldn't reasonably stop people being able to do this so why should i not be able to manipulate something i own via a computer instead of via wrench? There are already sufficient laws in place to handle the scenario where i do something reckless with my freedom.