There are countless lawsuits initiated and settled based on tenuous connections. Supplying someone with an unprescribed, and worse, unregulated pharmaceutical is already a crime, for a reason, shifting the burden to the supplier to prove it was safe.
Given these people undoubtedly don't practice opsec and have a paper trail confirming the transaction, and instructions on use, it's a slam dunk.
Only those unfamiliar with litigation would consider this risk "nonsense". Just wait and see.
Use it all you like, but the second you become a supplier it's a whole new ballgame.