But nothing about these designs breaks bones or cracks skulls for fare evasion. They just make it harder to kick your feet over.

Is your argument that making a barricade harder to bypass is responsible for causing injuries to fare evaders? Would the same hold true for any more effective barricade? I can punch right through a hollow core door, but I'll break my hand if I try it on a solid core door. How much blame should the design of the door get(or the people that chose to put the specific type of door there) when I break my hand?