Since there's obvious appetite to discuss this, we've merged the comments here instead of burying the current (re)post as a dupe like we normally would.

A couple more posts about this:

https://news.ycombinator.com/item?id=12994541

https://news.ycombinator.com/item?id=12994400

As the main hypothesis in this paper is that the momentum is transferred by pilot waves, it is worth to emphasize the (cited there) most known recent approaches - Couder's experiments which use classical object with wave-particle duality (droplet coupled with waves it creates), getting e.g. interference in double-slit, orbit quantization and many other quantum-like phenomena:

https://en.wikipedia.org/wiki/Hydrodynamic_quantum_analogs

https://www.youtube.com/watch?v=nmC0ygr08tE