Let's see how long the revolt you talk of would last when they start getting into work late after being denied access to the LU network for not complying with the security procedures.
LU handles more passengers in three days than Ben Gurion handles in a year. There isn't a chance in hell that airport-level security could reasonably be applied to that level of traffic, without it coming to a grinding halt.
Passengers would be able to walk on their hands to work, and still arrive long before anyone travelling by this 'high-security' metro. Be serious.
It's the same story at Heathrow. Finding a way to scan passengers thoroughly AND maintain the throughput is the Holy Grail of security companies - if only they realised it was as simple as you make out, eh?