Nope it probably doesn't need one but I used it last Oct on my solo trip and it did save me a few minutes. I had purchased my ticket that day and didn't get to the park until a little before 3PM so there was no chance of me getting TT or Soarin FPs. Ended up FP-ing Land, Seas & Space Ship Earth. Each had a wait of approximately 20 mins listed (probably an actual wait of about 10-15mins). By "pulling" my next FP closer after I got off the previous I was able to do walk onto 3 rides and make a quick 10-15 min walk around the aquarium in less than and hour (in line for Land at 2:55 - got off Space Ship Earth at 3:53). Considering it was a Sat at EPCOT during F&W and the day before Maelstrom closed I was happy.
Now would I chose it if I was pre-planning my FP, no, but as an alternative for a late arrival or as a choice for someone with children that don't meet the height restrictions for other rides I didn't mind it.