Why is that weird? You can have food, you can make food for yourself and your friend, but if you’re selling cooked food to strangers you need to have minimum standards of cleanliness etc.
But it still helps. It removes the stigma, but most importantly: In many countries going after substance users is a low-hanging fruit to police. Instead of solving real crimes if you raid a club you can arrest a lot of "criminals", improving your statistics.
In the "war on drugs", in 99% police is going after the users, not the dealers, because the latter are far harder to catch.