I know the Libertarians have been wanting to legalize pot, but with this I assume this has expanded to crack and acid?
It never expanded to these. They merely recognized immediately that the power to prevent individuals from harming themselves through threat of legal sanction or even force is not a power granted to the government within the U.S. constitution.
The intent of our founders was very clear.
"No man has a natural right to commit aggression on the equal rights of another, and this is all from which the laws ought to restrain him." ~Thomas Jefferson speaking to Francis Gilmer, 1816