True enough, from the Manual:
IMPORTANT NOTE: In Follow Me, the aircraft will maintain a constant altitude and cannot detect obstacles. Pilots who change their altitude during flight should be mindful of this.
Which does raise the question how will all this work with the YTH-Pro or when a RealSense module is added to the stock YTH? The (in)famous Intel mountain bike demo was supposed to be representing a follow-me mode, i.e. autonomous flight with OA active. It would be nice to see this all explained somewhere. In one of the early interview videos a Yuneec engineer or product mgr (can't remember his position) discussed in detail the flight mode in which the craft would yaw the craft so that the RealSense OA detection always faces the direction of travel while simultaneously panning and tilting the gimbal so that the camera FOV keeps the subject (via transmitter/controller GPS) in the frame. So it is (supposedly) able to function as if it has 360 degree OA by cleverly keeping the OA sensors aligned with the flight vector independent of the camera pointing direction.
The question is, is that functionality really coming later this summer? With Yuneec's current dreadful documentation for the YTH, I wonder whether YTH-Pro and RS module upgraders will even have adequate documentation to know what functionality they can actually expect in the real world. Since GPS info is needed for both the craft and for the transmitter/controller, operation in the kind of environments that the Intel demo simulated might turn out to be a fantasy anyway.
And, it there any reliable information regarding the power consumption of the RS module? It's bound to decrease flight time, but by how much? Can't see plunking down $s for the RS module until it's real-world performance becomes clear. Yuneec has demonstrated that their hype can significantly exceed performance for some features, including critical performance features like still and video image quality.
One of the claims the YTH appears to fully live up to is the ability to fly with only 5 functioning rotors. Good job on that!