While I agree longer *ride time* is always better, the standing queue pre-shows don't take away from the ride time.I should note that I find Rise to be absurly overrated. Same goes for Flight of Passage. This trend of making a standing portion of an attraction constitute the majority of a ride experience doesn't sit well with me (pun intended). I prefer a ride to be a good 8-15 minutes of sit down and enjoy content. We spend more than enough time walking around the parks (often in sweltering heat for WDW in particular). And then even longer standing in a queue and being herded along. More lengthy rides where you can just sit down, chill and enjoy the experience for a reasonable amount of time are needed. Especially at parks like AK.
Whether FoP or Cosmic, if you removed the standing preshows... you'd still be standing the same amount of time just by being in the queue. The pre-shows are just attempting to entertain you while you're in the queue. Nixing all pre-shows wouldn't change how long you're standing in a queue to get on a ride.