That's stupid. They make no demand for the containers *inside* the resealable bags to be....well, resealable. So one could load an approved bag with a sealed container**. As for the idiotic limited quantities rule: Do they not have the wit to comprehend ne'er-do-wells sending more than one person through? Each may only be allowed through with small amounts but send 10 or 20 or 30 people through and it doesn't take long to accumulate significant quantities. Mind you, why bother? Just get into one of the servicing vehicles that must come from outside. Those things are not searched in any meaningful way.
**All on the assumption that it's really possible to mix a viable concoction from whatever you carry through with you within the equipment & time restraints.