No comment on the rumor itself, but I've been a strong advocate of moving the It's a Bug's Land rides to DAK. The land is closing in DCA regardless, so the rides are being removed and DAK could use the boost in ride count and they actually fit the theme/vibe of DAK well. I wouldn't put them in Rafiki's though -- they should be towards the front of the park, like on Discovery Island (if there is enough room) or along the Africa to Pandora path.
Install Heimlich's, Flik's Flyers and Ladybug Boogie, add in a quick serve (Fulton's?) and maybe a M&G space and viola a new land on the cheap that adds needed capacity. Plus adding this child friendly rides would make removing Dinorama more reasonable enabling that space to be repurposed (Excavator?).