The designers are specifically choosing 4:20 exactly because it amuses them to include drug references. Therefore management is entitled to be offended by the drug reference. There is certainly no point in being offended over a random number, but this isn't a randomly chosen number.
But before reading responses I though that EC1's comment was about "The Hitchhiker's Guide to the Galaxy" reference. So had I would not returned to this thread I could use it with that meaning.
The designers are specifically choosing 4:20 exactly because it amuses them to include drug references. Therefore management is entitled to be offended by the drug reference. There is certainly no point in being offended over a random number, but this isn't a randomly chosen number.