Considering Holland came out in 1973, "Trader" doesn't even qualify as a long track. Come to think of it, that's the year of Tales from Topographic Oceans, when even progressive rock got pompous by its own ridiculous standards. In the early 70s, even when they attempted to fit in with the times the BB never lost their trademark pop senibilities.
The length alone when talking about a song has little to do with it being too long or too short. Some songs are 10 minutes and feel too short, some songs clock in at four minute and would be twice as effective if a minute or two was chopped off.