Pushing cases like Raich to their logical conclusion, it might well be that the federal government can, by the same logic, prohibit states from banning items that the federal government has decided are okay, since they are in the habit of prohibiting states from allowing items that the federal government has banned.
However, that's not the way the current tortured logic of the legal system works. Things can be banned in one state and not in another until the Supreme Court or your local federal circuit court says otherwise.
“The egg hatched...” “...the egg hatched... and a hundred baby spiders came out...”
“Who are you?” “A friend. I'm here to prevent you from making a mistake.” “You have no idea what I'm doing here, friend.” “In specific terms, no, but I swore an oath to protect the world...”
“It's a goal you won't understand until later. Your job is to make sure he doesn't achieve the goal.”