Looking at his hunched back when he's doing the "lift" makes me cringe. I'm not a "gym guy", I look like shit, but going to the gym a few times is the best thing I did for myself because I learned how to pick something from the floor and lift it without injuring my back.
The guy should pivot in place, bend at the knees, grab the handles, stand, and then pivot in place. It’s like people decided to invent a power suit because they forgot how to use their feet.
I'm highly skeptical of the twisting motion they seem to be encouraging here, which is normally just asking to be injured. I guess it would depend on how much their exosuit actually helps with that.
As far as bending at the knees though, you should read Why You SHOULD Use Your Back as a Crane[1].