We still deliver Coke in tanks. But most customers uses Bag-In-A-Box. Its more convenient.
Also, many of the newer stores were smaller and didn't have space to keep all those empties around, I found it to be a PITA and I had a very large store.
I will be happy to concede on the tanks, being out of it for twenty years, but the rest of the article is horsecrap and that includes their silly reason for the use of tanks.