Haha yeah I saw that too. I think the rant came from one of those commuters who also thinks that drivers make train announcements, guards decide which part of the platform the train stops at, train horns are too loud, train announcements are too frequent, etc etc. Great for a laugh!
Or it was a post from Brisbane, as it was also in the Brisbane mX yesterday and eating and drinking is prohibited in Queensland Rail trains. 'Vents' from Sydney, Melbourne and Brisbane appear in each others mX all the time.