What this article completely misses is the overall futility of this liquids rule. The chances of there even being an attempt at this type of attack are so low that there are much better things to do with this type of money and the time presently spent on people having to worry about their liquids, that this is non-economic by several orders of magnitude.
https://www.wsj.com/lifestyle/travel/airport-security-tsa-liquids-rules-9ccde493