Unsurprisingly, the article provides zero details as to how a blockchain actually solves any problems here. Frankly, it's very obviously useless for all "supply chain" related ideas. If you're going to do something illegal why would you record it in a blockchain?
Blockchain gives you security against bad actors. Here's a similar use case for a marijuana supply chain: https://www.nasdaq.com/article/leveraging-blockchains-to-tra...