If you’re smacking someone in the head with a baseball bat, this is a dynamic event: the force being applied to the stick by your hands at the moment of impact is mostly irrelevant, as it’s all about the momentum you’ve delivered to the bat during the swing just prior to impact. Your goal is to create a high impact force; this requires transferring a lot of momentum from your bat to their head, so you want the part of the bat that hits their head to have a lot of speed. For this application, a bat is better than a block of comparable mass because it lets you build up more speed at the point where your bat will impact its target. If you really want to optimize the situation you concentrate as much of the mass as practically possible on the moving end of your weapon, and you end up with a mace or a war hammer. The extreme opposite situation is a spherical ball of wood of the same mass as your baseball bat or mace, and you throw it at your target’s head. You won’t be able to get this ball of wood moving nearly as fast as your bat; yeah, it’ll probably hurt your target if it hits them in the head, but one good hit with a bat will probably kill them.
If you’re cutting material with a pair of scissors, this is a static event: unlike swinging a bat at someone’s head, you don’t build up speed with the scissor blades and then have the cutting edges slam into the material. The force being applied to the material during the cut is due to the force generated by your fingers at that specific moment, modified by the lever ratio. The distance from your fingers to the fulcrum is pretty much fixed, so for max cutting force, you move your material as close as possible to the fulcrum. This exactly obeys the lever rule.
The one exception I can think of is manual hedge clippers, the operation of which is often dynamic: you apply sharp force to get the blades and handles moving, and the momentum stored up in the heavy handles and blades helps keep the blades moving through small twigs and branches. However, the lever rule is still applicable here: maximum cutting force is achieved when the twigs and branches are as close to the fulcrum as possible. Sure, tiny twigs can be cut easily enough out near the blade tips, but when you encounter that one stubborn 5/8" branch, you move it close to the fulcrum so you can hack through it.