Because of what Kali River Rapids was
supposed to be: "Tiger River Run", Asia's version of Kilimanjaro Safaris.
Pull up Animal Kingdom on Google Maps, switch over to satellite view and look at Kali...to the north of the ride is a very large cleared area that was supposed to be the first 3/4s of the ride. It wasn't supposed to be the kind of raft ride that was eventually built...more like a river flume.
Guests would board boats similar to Universal's
Jurassic Park rafts that would have traveled through an Asian elephant enclosure...
Temple ruins inhabited by monkeys...
(but no King Louie, lol)
But...the bean counters took over and put the brakes on it. So we just got the grand finale turned into its own ride....which is akin to going on Kilimanjaro, driving around for a minute, seeing the poacher's camp and then pulling back into the station to unload.