Stop it now? NO No No
They just created all these, otherwise useless, jobs all around airports around the world. If they would stop this rule now all these people would find themselves without a job once more.
Why do you think they do everything they do, including annoying people from the moment they step into an airport, with such desparation and conviction? Exactly, to prove the use and value of their job.
As said above...when one wants to get the job done, he will find a way to do so. This is the sad truth about aviation and its an absolute fantasy to even remotely believe that aviation can be 100% terrorism free!