I assume Falcon was regularly hitting 1700-1800, but we know Rise of the Resistance wasn't.
I'm also guessing that the Peoplemover hasn't had many 3500 GPH days in the last 5 years either.
With all that said, Galaxy's Edge needed the Kinetic third attraction. I think Pandora gets away with not having this due to the water in the land, but Pandora was also underbuilt from a capacity standpoint as well. As soon as Disney took a few steps forward addressing capacity issues (Soarin', Toy Story, Dumbo, New Fantaslyand), they followed it up with capacity errors (Pandora, Galaxy's Edge, Slinky Dog, Frozen Ever After).