There's nothing stylish about being an alcoholic, but people often conflate the two because plenty of prominent, stylish people were also alcoholics. Drinking didn't make them stylish, and anyone who thinks getting lit will turn them into Keith Richards is probably a massive burden on everyone who has to put up with them.
Some people could consider drugs in the same way, just look how many celebrities do/did drugs. And many of them was famous to death thanks to drugs (as they died young, but this point like to be omitted)