Exactly. Few complain about the existence of security checkpoints; most anger is directed at the manner in which the UK security officers do their jobs.
The key point is that the energy is applied to the wrong part of the security net. Zealous officers who treat staff with utter disrespect at staff security? Does that enhance security?
There are often 6 officers to man VP2 at STN where 2 could do the job. Half of them are watching TV while eating iced buns and drinking tea.