In essence, the problem is that, if it walks like a duck and quacks like a duck, it could be a dragon doing a duck impersonation. One may not always want to let dragons into a pond, even if they can impersonate a duck.
Madness string 2813
My message to all those who carry out or support the so-called War on Drugs: You have qualified yourself to go straight to hell. You are without a shred of humanity or decency. Terrorizing, imprisoning, and murdering people for possessing or exchanging a damned plant: Can anything be more savage and idiotic?