Aum intended to kill thousands of people with sarin gas, and produced enough to do so. But they a) were not able to get the gas to a sufficiently high level of purity, and b) had issues with dispersal. In the 1995 Tokyo subway attack, they ended up killing 13 people, far less than the thousands that they intended.
IIRC b) was largely a matter of the people getting nervous and not deploying it in the intended way, rather than a matter of a lack of metis.
IIRC b) was largely a matter of the people getting nervous and not deploying it in the intended way, rather than a matter of a lack of metis.