There is a fundamental flaw in your thinking. You seem to think that the restrictions are there for security reasons and that this represents a "LOOPHOLE". In fact, the regulations that now exist are primarily there to sustain loads of numpties who would otherwise be unemployable, who generate huge income for the "security" companies that run them. Logic and security has very little to do with it.
Pilots are frequently stopped from taking a 70ml bottle of water, on "security" grounds, before taking charge of a fueled up 747... meanwhile, a fat, no hoper slob who works in WH Smith can carry through a crate full of liquids which are not subject to checks. Apparently, the fat slob at WH Smith is significantly more trustworthy than the pilot.
Equally, when the "security" staff have to pass through the screening portal, their shoes and belts are miraculously safe.. whereas my shoes and belt and those of the Captain of the 747 are highly risky and need to be removed.
Thank god they are there, keeping us safe and secure.