Is this real? This article on “Propellentless Propulsion” is blowing my mind a little bit.

https://thedebrief.org/nasa-veterans-propellantless-propulsion-drive-that-physics-says-shouldnt-work-just-produced-enough-thrust-to-defeat-earths-gravity/

This article sounds like they made a major breakthrough, yet I haven’t seen this covered by anyone else. It sounds like they are describing a UFO-like propulsion system. What are the odds of this discovery coming now amid all the UAP stuff coming out? Could this be back engineered tech?