They aren't, but Fairview's routes are the most prominent with that issue. Oradell's routes are definitely similar to Fairview's in terms of design, but the type of usage between both garages is different, same for Market Street.
The 200 Artic bus order is supposedly going to allow the 150s to become fully artic. When that, or Ridgefield Park happens remains to be seen.
-EDIT-
Mixed up the numbers between the artic order and the 40ft order.