This sounds like they are underhandedly supporting the aluminium can industry.
They're also in the pockets of beer companies, because they make higher profit margins when selling beer in cans and bottles than on kegs.
I'm sure if I bothered I could come up with several more conspiracy theories that make more sense than what I believe to be the truth.
I think these idiots really think that the solution to every perceived problem is legislation and government oversight of normally legal activities in an attempt to catch someone breaking the law.
These idiots basically see everyone as a potential criminal that must be watched to prevent them from going on a crime spree.
Ayn Rand covered this in Atlas Shrugged. She says that a government has no power over innocent citizens. But if laws are so numerous, and unable to be objectively interpreted, then everyone becomes a criminal and subject to government action.
And these idiots are usually attorneys or teachers. Rules take on a life of their own and become more important than the job they were elected for; representation of their constituents. These people are only representing themselves.