"Does it stop people using cars as weapons against people and infrastructure? No, but it massively reduces the possibility."
How does requiring a drivers license, an MOT, paying road tax etc stop someone from using purposely run people down, transport guns, drugs, pack full of explosives?
It doesn't, it ensures that people that do drive, have been educated on how to do it responsibly and it a known consistent manner so accidents are reduced.
Rules are to ensure the general public who are law abiding know how to behave, it has no affect on people that are wanting to disrupt.