I personally like the text (translation/paraphrase) that reads :
...to refrain from intoxicants or any abuse of the senses which are the occasion for carelessness...
It is in the carelessness caused by these intoxicants that we harm others (and ourselves) and as such I prefer to refrain from them.
Coffee, for me, is not on that list! In fact, if I don't have my morning dose(s), I may cause much harm to those around me!
The essence of a real practice is to bring our intellectual understanding to the level of our heart - so as to feel it - to live it!