This is not Physics-based at all, you need to introduce other variables like wind speed around the drone, the direction of the wind, angle of attack, viscosity, etc.
This example is parametric modeling at best or a configurator, not saying that is bad, just has a misleading title. I do not see any real geometry manipulation or groundbreaking CAD being attempted. Here is a viewer that Autodesk released this year using javascript.
For sure, there's a lot missing, title is probably misleading. Definitely nothing new in terms of the CAD, browser CAD has been well done, just look at professional products like Onshape. Right now it's primitives only for this, one of the next steps is to look at how full meshes can be optimized. A simple example of this could be wings: https://people.eecs.berkeley.edu/~pabbeel/papers/2013_gp_win...
https://developer.autodesk.com/